A.diode
B.transformer
C.transistor
D.rheostat
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A.Transducer
B.Reducer
C.Transformer
D.Rectifier
A.magnetic shield
B.electromagnet
C.piezoelectric device
D.electromagnetic domain
A.Sealed motors
B.Drip proof motors
C.Enclosed motors
D.Watertight motors
A.both meters in series with the resistance
B.both meters in parallel with the resistance
C.the ammeter in series and the voltmeter in parallel with the resistance
D.the ammeter in parallel and the voltmeter in series with the resistance
A.open circuit
B.short circuit
C.polarized ground
D.ground reference point
最新試題
The condensers located in various stages of a flash evaporator are cooled by（）
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During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
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Flame failure in an automatically fired auxiliary boiler can from a/an （）
Under MARPOL Code the ship to which it applies has to carry （）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）