第 5 页 共 6 页 《专业英语(自动化)》 练习卷A卷 一．Put the following words and phrases into English or chinese. (20*1=20)

1． 电路 2．控制系统 3．元件 4．电压 5．电流 6．欧姆定律 7．开关 8．指针 9．螺丝刀 10．引脚 11．Strip 12．Intergrated circuit 13．chip 14．sensor 15．maintenance 16．actuator 17．joint 18．servomotor 19．telerobot 20．gripper

二． Choose one word from the word list below to fill in the blank in each of the following sentences. (20*1=20) 1)Digital 2)analog, 3)positive 4)common 5)a function switch 6)a range switch 7)extended ranges of voltage 8)dc and ac 9)current 10) resistance

装 订 线 班级： 学号： 姓名： 第 6 页 共 6 页 A multimeter is a general-purpose meter capable of measuring voltage, , , and in some cases, decibels. There are two types of meters: using a standard meter movement with a needle (see Fig 3.1(a)), and , with an electronic numerical display (see Fig 3.1(b)). Both types of meters have a (+) jack and a jack (-) for the test leads， to select dc voltage, ac voltage, dc current, ac current, or ohms and for accurate readings. The meters may also have other jacks to measure (1 to 5 kV) and current (up to 10A) there are some variations to the functions used for specific meters. 1)Resistance 2)placed across (in parallel) 3)be removed 4)in series with 5)mechanical adjust 6)automatic indicator 5)properly 8) test leads 9)correct 10)be opened Besides the function and range switches (sometimes they are in a single switch.) The analog meter may have a polarity switch to facilitate reversing the test leads. The needle usually has a screw for to set it to zero and also a zero adjust control to compensate for weakening batteries when measuring . An analog meter can read positive and negative voltage by simply reversing the or moving the polarity switch. A digital meter usually has an for polarity on its display. Meters must be connected to a circuit to ensure a reading. A voltmeter is always the circuit or component to be measured. When measuring current, the circuit must and the meter inserted the circuit or component to be measured. When measuring the resistance of a component in a circuit, the voltage to the circuit must and the meter placed in parallel with the component.

三.Read the following passage and answer the questions.（5*8=40） Robots Robots produce mechanical motion that,in most cases,results in manipulation or locomotion.For example,industrial robots manipulate parts or tools to perform manufacturing tasks such as material handing,welding,spray painting,or assembly;automated guided vehicles are used for transporting materials in factories and warehouses.Telerobots provide astronauts with large mainipulators for remotely performing spacecraft maintenance. Robots perform repetitive,high-precision operations 24 hours a day without fatigue.Robots on this automobile assembly line weld body parts together.The General Motors corporation uses about 16,000 robots to weld,assemble,and paint automobiles. Walking robots explore active volcanoes.Mechanical characteristics for robots include degrees of freedom of movement,size and shape of the operating space,stiffness and strength of the structure ,lifting capacity,velocity ,and acceleration 第 5 页 共 6 页

under load.Performance measures include repeatability and accuracy of positioning,speed,and freedom from vibration. A robot is made up of sensors,actuators,and computatlonal elements(a microprocessor).Actuators for moving joints of a robot are usually electric servomotors.In the past ,larger robots were built with hydraulic actuation due to their high payload capacity and ability to work in explosion-prone environments.In the 1990s,there was a trend by the major manufacturers to use electric actuators in most of their industrial robots. A robot is an automatically controlled, reprogrammable, multipurpose, manipulating machine with several reprogrammable axes, which may be either fixed in place or mobile for use in industrial automation applications. The key words are reprogrammable and multipurpose because most single-purpose machines do not meet these two requirements. The term “reprogrammable” implies two things: The robot operates according to a written program, and this program can be rewritten to accommodate a variety of manufacturing tasks. The term “multipurpose” means that the robot can perform many different functions, depending on the program and tooling currently in use. Over the past two decades, the robot has been introduced into industry to perform many monotonous and often unsafe operations. Because robots can perform certain basic tasks more quickly and accurately than humans, they are being increasingly used in various manufacturing industries. 1.What industrial robots can do for people?