A.Fan
B.Pump
C.Winch
D.Machine tool
您可能感興趣的試卷
你可能感興趣的試題
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
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Which of the following items don’t belong to dock repair works?（）
Cold weather starting of a diesel engine may be made easier by（）
To proceed to the assistance of a ship in distress is（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
Diesel engine air start system check valves are opened by （）
The condensers located in various stages of a flash evaporator are cooled by（）