9 航海气象9.2 海上气象报告与气象导航951．When winds of force reach 10-11 in Beaufort Scale，usually we call such winds as ______.A. HurricaneB. BreezeC. StormD. GaleKEY: C952．The Routing System which aimed at reducing the risk of casualties is called as ______.A. Traffic Separation SchemesB. Recommended tracksC. Precautionary areasD. Inshore traffic zonesKEY: A953．______ LOW ELY SLWLY WITH COLD FRONT FM CEN TO 12N 179W AND WARM FROM FM CEN TO 11N 171W．A. SHLWB. SCTDC. OBSD. SWKEY: A954．______ moving rather quickly east expected 150 miles south of Cape Farewell 972 by 160000 GMT．A. Developed lowB. Developing lowC. Being developed lowD. Low to be developedKEY: B955．______ rain means it rains in some parts of the area．A. SquallyB. IsolatedC. ScatteredD. Occasional KEY: C956．{On account of} the bad weather，my ETA is amended to read 1830 his on July 15th．A. For the account of B. Because C. Owing to D. For fear of KEY: C957．A cold front moving in from the northwest can produce ______.A. thunderstorms，hail，and then rapid clearingB. increasing cloud cover lasting for several daysC. lengthy wet weatherD. low ceilings with thick cirrus cloudsKEY: A958．A feature of an inflatable raft which helps keep people stationary in rough weather is ______.A. lashings on the floor of the raft for the passenger's feetB. straps from the overheadC. lifelines on the inside of the raftD. ridges in the floor of the raftKEY: C959．A line on a weather chart connecting places which have the same barometric pressure is called an ______.A. isothermB. isallobarC. isobarD. isotopeKEY: C960．A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a ______.A. foehnB. chinookC. land breezeD. sea breeze KEY: D961．A local wind which occurs during the daytime and is caused by the different rates of warming of land and water is a ______.A. FoehnB. ChinookC. land breezeD. sea breezeKEY: D962．A low，uniform layer of cloud resembling fog，but not resting on the ground，is called______.A. cumulusB. nimbusC. stratusD. cirrus KEY: C963．A mercurial barometer at sea is subject to rapid variations in height (pumping) due to the pitch and roll of the vessel. To avoid this error，measurements of atmospheric pressure at sea are usually measured with a(n) _____.A. syphon barometerB. cistern barometerC. aneroid barometerD. fortin barometerKEY: C964．A microbarograph is a precision instrument that provides a ______.A. charted record of atmospheric temperature over timeB. charted record of atmospheric pressure over timeC. graphic record of combustible gases measured in an atmosphereD. graphic record of vapor pressure from a flammable/combustible liquidKEY: B965．A millibar is a unit of ______.A. humidityB. precipitationC. pressureD. temperature KEY: C966．A sea breeze is a wind ______.A. that blows towards the sea at nightB. that blows towards an island during the dayC. caused by cold air descending a coastal inclineD. caused by the distant approach of a hurricaneKEY: B967．A sylphon cell is a part of a ______.A. maximum thermometerB. barographC. thermographD. hygrometerKEY: B968．A tropical cyclone has recurved and entered temperate latitudes. In the Northern Hemisphere when a large high pressure system lies north of the storm，what situation may occur?A. The low may suddenly deepen，and the cyclone intensify and pick up speed.B. The left semicircle may become the dangerous semicircle.C. The low and the high may merge and cancel out the weather characteristics of each.D. The high may force the cyclone to reverse its track.KEY: B969．A tropical storm is building strength some distance from your ship. Waves are coming from the east，with periods increasing from 5 seconds to 15 seconds. The swell is from the east. Where was the storm when these new swells were generated?A. To the north of youB. To the south of youC. To the east of youD. To the west of youKEY: C970．A tropical wave is located 200 miles due west of your position，which is north of the equator. Where will the wave be in 24 hours?A. Farther away to the westB. Farther away to the eastC. In the same placeD. Closer and to the westKEY: A971．A tropical wave is usually preceded by ______.A. tropical stormsB. good weatherC. heavy rain and cloudinessD. heavy seasKEY: B972．A weather forecast states that the wind will commence backing. In the Northern Hemisphere，this would indicate that it will ______.A. shift in a clockwise mannerB. shift in a counterclockwise mannerC. continue blowing from the same directionD. decrease in velocityKEY: B973．A weather map is a synoptic data because it ______.A. summarizes a great deal of informationB. can be interpreted accuratelyC. appears dailyD. is prepared by the Weather BureauKEY: A974．A WIND BLOWS ROUND ANTICLOCKWISE defines ______.A. Backing (of wind)B. Beach (to)C. Veering (of wind)D. Maintaining direction of the windKEY: A975．After a cold front passes the barometric pressure usually ______.A. fluctuatesB. remains the sameC. remains the same，with clouds forming rapidlyD. rises，often quite rapidly，with clearing skiesKEY: D976．After a cold front passes，the barometric pressure ______.A. drops，and the temperature dropsB. drops，and the temperature risesC. rises，and the temperature dropsD. rises，and the temperature risesKEY: C977．All of the following are associated with cumulonimbus clouds EXCEPT ______.A. steady rainfallB. hail stormsC. thunderstormsD. tornadoes or waterspoutsKEY: A978．An air mass is termed warm if ______.A. it is above 70°FB. the ground over which it moves is cooler than the airC. it originated in a high pressure areaD. it originated in a low pressure area KEY: B979．An aneroid barometer is an instrument ______.A. used to measure the speed of windB. in which the pressure of the air ismeasuredC. that tells which direction a storm is coming fromD. used to measure the height of wavesKEY: B980．An occluded front on a weather map is colored ______.A. blue lineB. purple lineC. dashed blue lineD. alternate red and blue lineKEY: B981．Anticyclones are usually characterized by ______.A. dry，fair weatherB. high winds and cloudinessC. gustiness and continuous precipitationD. overcast skiesKEY: A982．As the temperature for a given mass of air increases，the ______.A. dew point increasesB. dew point decreasesC. relative humidity increasesD. relative humidity decreasesKEY: D983．BASHI：E TO SE 9-10．500M IN HVY SQUALLY SHWRS AND TS．SEA 8-9M．SWELL SE 6-7M．From the above forecast，the wind in Beaufort Scale will be ______.A. STRONG GALE TO STORMB. GALE TO STRONG GALEC. NEAR GALE TO GALED. STRONG BREEZE TO NEAR GALE KEY: A984．CAPE WEST WIND WEST TO SOUTHWEST 15 TO 20 KNOTS WEATHER SHOWERS．This description is likely to be under the heading of ______.A. FORECASTB. STORM WARNINGC. GENERAL SITUATIOND. MAP ANALYSISKEY: A985．During the voyage he encountered boisterous winds and heavy weather during which time the vessel ______ heavily and to such an extent that at times it was necessary to change course．A. moved B. labored C. drove D. wentKEY: B986．During the voyage my ship ______ bad weather in the Pacific Ocean．A. meets withB. has met withC. met withD. meeted withKEY: C987．Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit? ______.A. UpwindB. DownwindC. CrosswindD. DowncurrentKEY: A988．Fleet weather forecast messages are the expected conditions in ______.A. a certain areaB. all ocean areasC. some areasD. important areas KEY: A989．For an accurate barometer check，you would ______.A. check it with a barometer on another vesselB. take readings from several barometers and average themC. check it with the barometer at the ship chandleryD. check it against radio or National Weather Service reports of the immediate vicinity KEY: D990．Gale warnings are usually issued when winds of ______ 8-9 are expected．A. wind SpeedB. Air ForceC. wind VelocityD. Beaufort Force KEY: D991．HIGH WAVES；DENSE STREAKS OF FOAM ALONG THE DIRECTION OF THE WIND；CRESTS OF WAVES BEGIN TO TOPPLE，TUMBLE AND ROLL OVER；SPRAY MAY AFFECT VISIBILITY．This condition is likely to be termed ______.A. strong breezeB. near galeC. galeD. strong gale KEY: D992．If a weather bulletin shows the center of a low pressure system to be 100 miles due east of you，what winds can you expect in the Southern Hemisphere? ______.A. South-southwesterlyB. North-northwesterlyC. South-southeasterlyD. North-northeasterlyKEY: A993．If the sky was clear，with the exception of a few cumulus clouds，it would indicate ______.A. rainB. hurricane weatherC. fair weatherD. fog setting in KEY: C994．If your weather bulletin shows the center of a low pressure area to be 100 miles due east of your position，what winds can you expect in the Northern Hemisphere? ______.A. East to northeastB. East to southeastC. North to northwestD. South to southeastKEY: C995．In Beaufort Scale，the wind force 7 with speed of 28-33 knots is defined as ______.A. Moderate galeB. Near galeC. Strong galeD. Whole galeKEY: B996．INTERTROPICAL CONVERGENCE ZONE OVER SOUTH PHILIPPINE PASSING OVER MINDANAO NORTHERN SULU AND PALAWAN．This paragraph is likely to be under the heading of ______.A. GALE WARNINGB. 24 HOURS FORECASTC. SYNOPSISD. STORM WARNINGKEY: C997．It is predicted that heavy rains are ______ to flood the harbor and its vicinity in a few days．A. frightening B. threatening C. scattering D. warning KEY: B998．Mechanical lifting of air by the upslope slant of the terrain is called ______.A. vertical liftingB. convective liftingC. advective liftingD. topographic liftingKEY: D999．Of the following，______ is not a wind．A. boraB. gustC. gregaleD. floeKEY: D1000．OWING TROPICAL STORM9706 CROSSING OUR/COURSE PLSPERMIT SHELTERING KAGOSHIMA KAIWAN. This cable indicates that ______.A. she requested shelter permissionB. she intended to berth at port of KAGOSHIMAC. she intended to change her courseD. she was reporting to the port that a tropical storm is comingKEY: A9.3 海上天气现象1001．When a wind blows round clockwise，it is ______.A. VariableB. ChangingC. BackingD. VeeringKEY: D1002．Isobars on a synoptic chart are useful in predicting ______.A. temperatureB. dew pointC. wind velocityD. relative humidity KEY: C1003．______ causing strong winds and rough sea north west Bay of Biscay．A. Strong low pressureB. Strong high pressureC. Steep pressure gradientD. Steep gradient pressureKEY: C1004．A hurricane moving northeast out of the Gulf passes west of your position. You could expect all of the following EXCEPT ______.A. higher than normal swellsB. high windsC. winds veering from south，through west，to northwestD. light showers KEY: D1005．A katabatic wind blows ______.A. up an incline due to surface heatingB. in a circular patternC. down an incline due to cooling of the airD. horizontally between a high and a low pressure areaKEY: C1006．A steep barometric gradient indicates ______.A. calmsB. light windsC. strong windsD. precipitationKEY: C1007．A storm is forecast for the area where your vessel is moored. For its safety you should put ______.A. more slack in the mooring linesB. a strain on the mooring linesC. chafing gear on the mooring linesD. grease on the mooring linesKEY: C1008．A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is called ______.A. Tehuan tepecerB. PapagayoC. NortherD. PamperoKEY: B1009．A strong，often violent，northerly wind occurring on the Pacific coast of Mexico，particularly during the colder months，is a ______.A. PapagayoB. fall windC. foehnD. williwawKEY: B1010．A thin，whitish，high cloud popularly known as mares tails is ______.A. altostratusB. stratusC. cumulusD. cirrusKEY: D1011．A very light breeze that causes ripples on a small area of still water is a ______.A. cat's pawB. hog's breathC. williwawD. chinook KEY: A1012．Above-normal tides near the center of a hurricane maybe caused by the ______.A. high barometric pressureB. jet streamC. storm surgeD. torrential rainsKEY: C1013．Altocumulus clouds are defined as ______.A. high cloudsB. middle cloudsC. low cloudsD. vertical development cloudsKEY: B1014．An anemometer on a moving vessel measures ______.A. apparent wind speed onlyB. true wind speed and true wind directionC. true wind speed onlyD. apparent wind speed and true wind direction KEY: A1015．An aneroid barometer reading should be corrected for differences in ______.A. elevationB. temperatureC. wind speedD. latitudeKEY: A1016．Cirrus clouds are composed primarily of ______.A. ice crystalsB. water dropletsC. snow crystalsD. nitrogenKEY: A1017．Early indications of the approach of a hurricane may be all of the following EXCEPT______.A. short confused swellsB. gradually increasing white clouds (mare's tails)C. pumping barometerD. continuous fine mist-like rain KEY: A1018．Especially in adverse weather，risk of collision with an offshore supply vessel increases when the vessel is moored to what side of the unit? ______.A. UpwindB. DownwindC. CrosswindD. DowncurrentKEY: A1019．Fetch is the ______.A. distance a wave travels between formation and decayB. stretch of water over which a wave-forming wind blowsC. time in seconds required for two crests to pass a given pointD. measurement of a wave's steepnessKEY: B1020．Fleet weather forecast messages are the expected conditions in ______.A. a certain areaB. all ocean areasC. some areasD. important areasKEY: A1021．Fog is likely to occur when there is little difference between the dew point and the ______.A. relative humidityB. air temperatureC. barometric pressureD. absolute humidityKEY: B1022．For an accurate barometer check，you would ______.A. check it with a barometer on another vesselB. take readings from several barometers and average themC. check it with the barometer at the ship chandleryD. check it against radio or National Weather Service reports of the immediate vicinity KEY: D1023．Gasoline tank vent lines on board small passenger vesselsmust be fitted with removable flame screens ____.A. and 30 square inches of louversB. three inches in diameter with a check valve to prevent water from entering in heavy weatherC. three inches in circumference inside the fill pipeD. consisting of a single screen of at least 30 X 30 mesh，corrosion resistant wireKEY: D1024．Generally speaking，with ______ the weather becomes cloudy or overcast with strong winds．A. high pressuresB. low pressuresC. weak pressuresD. strong pressuresKEY: B1025．Good weather is usually associated with a region of ______.A. low barometric pressureB. high barometric pressureC. falling barometric pressureD. pumping barometric pressureKEY: B1026．High clouds，composed of small white flakes or scaly globular masses，and often banded together to form a mackerel sky，would be classified as ______.A. cirrusB. cirrocumulusC. altostratusD. cumulonimbusKEY: B1027．High pressure ridge ______ from Sevastopol to eastern Libya．A. reachingB. extendingC. increasingD. upgradingKEY: B1028．Hurricane warnings are issued ______ when winds of force 12 or above are expected．A. in all parts of the world B. in some parts of the worldC. from all corners of the worldD. from every corner of the world KEY: B1029．If you are caught in the left semicircle of a tropical storm，in the Southern Hemisphere，you should bring the wind ______.A. on the starboard quarter，hold course and make as much way as possibleB. 2 points on the port quarter，and make as much way as possibleC. on the port bow，and make as much way as possibleD. dead ahead and heave toKEY: C1030．In a storm，the leeward lines of a ship's mooring system will ______.A. pull the unit in the same direction that the weather is pushing itB. pull the unit in the opposite direction that the weather is pushing itC. tend to keep the unit on its original location over the well headD. affect the unit's draft and inclination as maximum mooring tensions are reachedKEY: A1031．In bad weather，what length of chain should be used with a single anchor?A. 3 times the depth of waterB. 6 times the depth of waterC. 10 times the depth of waterD. 15 times the depth of waterKEY: C1032．In North America the majority of the weather systems move from ______.A. north to southB. south to northC. east to westD. west to eastKEY: D1033．In reading a weather map，closely spaced pressure gradient lines would indicate ______.A. high windsB. high overcast cloudsC. calm or light windsD. fog or steady rainKEY: A1034．In the doldrums you can expect ______.A. steady，constant windsB. frequent rain showers and thunderstormsC. steep pressure gradientsD. low relative humidityKEY: B1035．In the doldrums you will NOT have ______.A. high relative humidityB. frequent showers and thunderstormsC. steep pressure gradientsD. frequent calmsKEY: C1036．In the relatively calm area near the hurricane center，the seas are ______.A. moderate but easily navigatedB. calmC. mountainous and confusedD. mountainous but fairly regular as far as direction is concernedKEY: C1037．Little or no change in the barometric reading over a twelve hour period indicates ______.A. stormy weather is imminentB. that present weather conditions will continueC. a defect in the barometerD. increasing wind strengthKEY: B1038．MAINLY GOOD BECOMING MODERATE．This forecast probably refers to ______ in a certain area．A. visibilityB. windsC. seaD. fogKEY: A1039．MAINLY VARIABLE 3 to 4 VEERING NELY 5 TOMORROW MORNING．This forecast refers to ______ in the designated area．A. visibilityB. windsC. seaD. fog KEY: B1040．Most high pressure areas are accompanied by ______.A. precipitationB. clear，cool weatherC. humid，sticky weatherD. cool fogsKEY: B1041．NASHA VERELLA ST JACQUES ZENMU ANSHA REEF CLOUDY TO OVERCAST WITH SHOWERS WIND SW 17 TO 21 SEA MOD VIS GOOD TO MOD．The abovementioned forecast is probably from ______.A. Radio DalianB. Radio GuangzhouC. Radio SingaporeD. Radio BangkokKEY: B1042．Navigational warnings and weather bulletins for shipping ______ from Singapore Radio．A. broadcast B. broadcasted C. are broadcast D. are broadcastedKEY: C1043．On a working copy of a weather map，a cold front is represented by what color line?A. RedB. BlueC. Alternating red and blueD. PurpleKEY: B1044．On the pole side of the high pressure belt in each hemisphere，the pressure diminishes. The winds along these gradients are diverted by the Earth's rotation toward the east and are known as the ______.A. geostrophic windsB. doldrumsC. horse latitudesD. prevailing westerliesKEY: D1045．Plain language is usually used on marine weather ______.A. forecastsB. observationsC. analysesD. reports KEY: A1046．Prevailing winds between 30°N and 60°N latitude are from the ______.A. northB. southC. eastD. westKEY: D1047．Recurvature of a hurricane's track usually results in the forward speed ______.A. increasingB. decreasingC. remaining the sameD. varying during the dayKEY: A1048．Relative humidity is the percentage of water vapor that is in the air as compared to the maximum amount it can hold at ______.A. a specific barometric pressureB. a specific temperatureC. a specific wind speedD. any timeKEY: B1049．Snow has obliterated surface features and the sky is covered with uniform，altostratus clouds. There are no shadows and the horizon has disappeared. What is this condition called?A. Ice blinkB. WhiteoutC. Water skyD.Aurora reflectionKEY: B1050．Steady precipitation is typical of ______.A. coming cold weather conditionsB. a warm front weather conditionC. high pressure conditionsD. scattered cumulus cloudsKEY: B。