單項(xiàng)選擇題

The lubricating pipes and dusts should be blown out with （）.

A.atmosphere
B.the fresh water
C.compressed air
D.chemical compounds

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單項(xiàng)選擇題

The lubricating oil is pumped from the drain tank, very often with （） in the suction line.

A.a filter
B.a strainer
C.a magnetic filter
D.a fine strainer

單項(xiàng)選擇題

The lube oil in the bearings is drawn from a （）, usually located in the bedplate.

A.tank
B.sump
C.vessel
D.bottle