單項(xiàng)選擇題

In an oil cooler circulated by sea water, the oil is at a larger pressure the result being that any leak in the cooler will mean a loss of （）.

A.oil
B.sea water
C.refrigerant
D.fresh water

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單項(xiàng)選擇題

In （）, hot diesel engine jacket water passes over the stack and heats the sea water passing through the tubes.

A.a flash generator
B.a flash evaporator
C.a vacuum boiling evaporator
D.a boiler

單項(xiàng)選擇題

When a boiler is operating, the water level in the gauge glass reads （） when the boiler is shut down.

A.lower than
B.higher than
C.as much as
D.the same as