單項(xiàng)選擇題

The function of lubricating oil is to （）.

A.reduce friction between moving surfaces
B.provide even distribution of bearing wear
C.reduce the accumulation of harmful detergents
D.maintain a constant oil temperature output at each beating

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單項(xiàng)選擇題

In a flash distilling unit, evaporator feed (seawater) first absorbs heat in the （）.

A.vapor feed heater
B.air ejector condenser
C.saltwater heater
D.distillate cooler

單項(xiàng)選擇題

An independent bilge suction is required for （）.

A.ballast tanks
B.sludge tanks
C.machinery space bilges
D.cargo hold bilges