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英语PNEUMATIC指（）
- A、电动的
- B、气动的
- C、电磁阀
- D、转换器
参考答案
更多 “英语PNEUMATIC指（）A、电动的B、气动的C、电磁阀D、转换器” 相关考题
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Words with such clusters as “ch”, “ph”, “pn”, “rh” as in chasm, phone, pneumatic and rhetoric are most probably of _________ origin.
A.GermanB.ChineseC.GreekD.Latin
考题
下列词义的引申中,属于换喻的是()
A、英语“pen”本义是“羽毛”，引申义为“笔”B、法语“bureau”本义是毛布，后来指铺毛布的“办公桌”C、俄语“ЯЗЫК”本义是指“舌头”，后用来指“语言D、汉语“习”本义是“鸟反复练习飞行”，后来指“复习、温习”之义E、英语window本义是窗口，现在用来指电脑桌面操作系统
考题
Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components
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Which device is designed to automatically hold the load if power should fail to an electric winch?A.Pneumatic brakeB.Electromagnetic brakeC.Hand brakeD.Motor controller
考题
The pneumatic containers which store bulk dry mud additives and cement on a ship are called ______．A.Mud hoppersB.Bulk binsC.P-tanksD.Mud tanks
考题
单选题Condensate must be drained periodically from the air compressor receivers to prevent （）.A
second stage cylinder lockupB
oil sump contaminationC
faulty operation of pneumatic valvesD
corrosion of air receiver baffles
考题
单选题Restrictions occurring in the small orifices of pneumatic control system components can be used by （）A
moisture in the compressed air supplyB
excessive dryness in the compressed air supplyC
pressure surging in the compressed air receiverD
insufficient lubrication of the system components
考题
单选题The pneumatic containers which store bulk dry mud additives and cement on a ship are called（）.A
mud hoppersB
bulk binsC
P-tanksD
mud tanks
考题
单选题The two most common gases used in pneumatic system are （）A
compressed air and nitrogenB
helium and nitrogenC
oxygen and hydrogenD
oxygen and acetylene
考题
单选题In a pneumatic automation system, a unit producing a signal to govern the position of the controller of the measured variable, relative to the value of the measured variable, is said to have（）.A
reset actionB
proportional actionC
two position actionD
rate action
考题
单选题Compressed air is used on board ship （）.A
for starting diesel enginesB
in pneumatic control systemC
in pneumatic toolsD
All the above are true
考题
单选题The hand steering is a method by which the motion of the rudder is controlled with （）.A
a motor-driven steering wheelB
a pneumatic steering wheelC
a hand-driven steering wheelD
an electric steering wheel
考题
单选题If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.A
control air systemB
forced draft air systemC
supply air systemD
ships service air system
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