A.Fan
B.Pump
C.Winch
D.Machine tool
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A.number of turns of wire in the armature coil
B.number of magnetic poles
C.strength of the magnets used
D.output voltage
A.diode
B.transformer
C.transistor
D.rheostat
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
最新試題
The ISPS Code consists of a mandatory section-Part A, which shows（）
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（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
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Under MARPOL Code the ship to which it applies has to carry （）
If separating effect is not good, which measure should be taken （）
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
Using a file without a handle may result in （）