單項選擇題

All of the following steps are taken in starting a centrifugal pump，EXCEPT to（）.

A.set the relief valve
B.check the lubrication system
C.vent the pump casing
D.open the pump suction and discharge valves

你可能感興趣的試題

單項選擇題

After an engine is started you should（）.

A.increase engine speed to insure adequate flow of oil to all parts of the engine
B.pay no attention unless there are unusual noises from the engine
C.check operating pressures and temperatures，and check for leaks
D.run the engine at idle until the temperature has increased

單項選擇題

A wobbling tail shaft is an indication of（）.

A.shallow water
B.an engine that is misfiring
C.a tight tail shaft gland
D.worn stern bearing or misalignment

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All of the following steps are taken in starting a centrifugal pump，EXCEPT to（）.

你可能感興趣的試題

After an engine is started you should（）.

A wobbling tail shaft is an indication of（）.

All of the following steps are taken in starting a centrifugal pump，EXCEPT to（）.