A.two frequencies must be brought into phase
B.the incoming machine accepts a small amount of load
C.the running machine must be unload
D.both voltages are equal
您可能感興趣的試卷
你可能感興趣的試題
A.opposite polarity
B.the same polarity
C.negative polarity
D.positive polarity
A.larger and heavier than
B.as much as
C.smaller and lighter than
D.more dangerous than
A.one slip-ring
B.two sliprings
C.three sliprings
D.four sliprings
A.stationary；rotate
B.stationary；stationary
C.rotate；stationary
D.rotate；rotate
A.sine
B.cosine
C.tangent
D.cotangent
最新試題
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
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?（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
To proceed to the assistance of a ship in distress is（）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Cold weather starting of a diesel engine may be made easier by（）
The ISPS Code consists of a mandatory section-Part A, which shows（）