A.protective earth
B.isolators
C.ground switch
D.circuit-breakers
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A.a closed loop control system
B.an open loop control system
C.a boiler control system
D.a steering gear control system
A.a manual closed loop
B.a manual opened loop
C.an automatic closed loop
D.an automatic opened loop
A.the absolute pressure
B.the gauge pressure
C.the vacuum pressure
D.the differential pressure
A.measured
B.recorded
C.transferred
D.controlled
A.a current will flow
B.a power will develop
C.a heat will flow
D.a pressure will produce
最新試題
Cold weather starting of a diesel engine may be made easier by（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Under MARPOL Code the ship to which it applies has to carry （）
（） is not installed on the main switchboar.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
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（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish