电气专业英语试卷-复习B卷(共4页).doc

精选优质文档-倾情为你奉上电气专业英语试卷复习卷2一.中英文单词互译. (1*25=25)1screw 2Magnetic field 3resistor 4multimeter 5semiconductor 6circuit 7 8gear 9spindle 10switch11. 传感器 12气动 13电动机 14速度 15电感 16绝缘体 17接触器 18弹簧 19常开触点 20电压 21导体22电容23焊接24并联电路25串联电路二根据英文词组，写出中文意义（2*10=20）on the other handtake advantage ofpositive chargegravity fieldfree electroncurrent flowAxial forceElectromotive forceMechanical drawingThree dimentional 三 英文翻译成中文 (30*1=30)1Before measuring a resistance, it is important to check the zero adjustment. .The procedure is as follow: (1)    Set the range selector switch on the desired range.(2)    Connect the test leads together. The indicating needle should point to zero.(3) If the needle is not aligned with zero line, turn the zero adjustment until the needle and the zero line are aligned. Note: Do not leave the test leads connected together, because under zero resistance the batteries will deteriorate rapidly.(4) CAUTION: Be sure the circuit is deenergized. (5)  Connect the test leads across (in parallel with) the component or circuit to be measured. 四、根据英文缩写，写出英文完整形式及中文意思（2*5=10）英文完整形式中文意思PLCEMFCNCMPSDC五根据下列方框中所给的词填空（1*5=5）gearbox coolant lubrication chip maintenance tool exter nal filters cracking1.Daily maintenance includes checking the _views and checking the inside of the control units.Checking the exter nal views includes:(1)Fill _every eight-hour shift(2)Check _tank level of slide ways.(3)Clean _from slide way covers and bottom pans.(4)Clean chips from _changers.六根据下列短文回答问题,回答请使用英文。（2*5=10）Electric potential is what drives current. You may know electric potential by another term that we will use .voltage. This name comes from the unit of potential, which is the volt (denoted V). When you buy an AA battery, you are buying a device that provides a potential of 1.5 V between its positive and negative terminals. Your car battery maintains about 12 V between its terminals. And the potential between the two slots in a household electrical outlet is about 120 V. You are probably already familiar with a basic truth about electric potential. All other things being equal, a greater potential will create a greater current. But what is electric potential? Water can provide a good analogy (although far from perfect!) for both current and potential. Consider a pipe that comes out of the bottom of a large tank of water. You open the spigot and water flows. The flow rate of the water is analogous to current. Common sense tells you that the higher the water level in the tank, the higher the flow rate in the pipe. The height of the water level is analagous to electric potential. A greater potential will cause a greater current.Where this analogy fails is with the battery. The tank stores water and as the height slowly decreases, so does the water flow. A battery does not store charge! It is always electrically neutral and for whatever amount of charge leaves one terminal, an equal amount must come into the other. A battery is more analogous to the water pump. A battery, therefore, is an electron pump! It has the ability to push electrons directly proportional to its voltage rating. And, it does this through a chemical reaction. The battery becomes "discharged," (an unfortunately misleading term), when the chemicals in the battery are used up. Most batteries maintain a fixed potential until near the end of their life. The 120 V potential of a household outlet is produced in a very different way. 1. What is electric potential? What is another term people will use for it? 2. What is the potential between the two slots in a household electrical outlet?3. What is the relationship between the potential and the current when all other things are equal?4. What can be a good analogy (although far from perfect!) for both current and potential?5. What is analogous(类似) to current? 命题人：周敏 校对：陈歆专心-专注-专业