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electric hand saw（）
- A、梅花扳手
- B、锤子
- C、电动手锯
- D、套筒扳手
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The “Mode” selector switch on the autopilot steering stand is used to select any of the following with the EXCEPTION of ______.A.automatic pilot steeringB.hand-electric steeringC.non-follow-up steeringD.rudder adjustment
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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
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Decide on the correct stress pattern of the answer to the question: Where did you see him?
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共用题干
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It is imperative that students ____________ their term papers on time.A.hand in
B.would hand in
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When you want to saw metal, （）will be used.A、the hack sawB、the hand sawC、the wood working sawD、wood saw
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单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.A
to their final position with the winch operating at slow speedB
to the bar stop，and then hand cranked to their final positionC
until just before they make contact with the limit switch，and then hand cranked to their final positionD
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单选题操作完后，关掉电动机。（）A
After operation, start the electric motor.B
Before operation, stop the electric motor.C
Before operation, start the electric motor.D
After operation, stop the electric motor.
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单选题When would you ground an electric hand tool?（）A
When it is a DC machineB
When it is an AC machineC
Any machine that operates on over 100 voltsD
Only when working on wet steel plates
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单选题When you want to saw metal, （）will be used.A
the hack sawB
the hand sawC
the wood working sawD
wood saw
考题
单选题What type of electric motor is most commonly used on board ship?（）A
non-synchronous electric motorB
synchronous electric motorC
fully enclosed electric motorD
watertight electric motor
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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
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单选题The naughty boy（）in his shoes when he saw the cane in his father's hand.A
shiveredB
trembledC
frightenedD
feared
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