单项选择题

The cooling water is in direct contact with the outer surface of the liner as a result of which it is termed a （）.

A.water liner
B.wet liner
C.dry liner
D.drown liner

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单项选择题

A.sea water
B.scavenging air
C.lubricating oil
D.fuel oil

单项选择题

A.jacket water
B.make-up water
C.boiler water
D.flushing water

单项选择题

A.the faster it will evaporate
B.the slower it will condense
C.the slower it will evaporate
D.the faster it will flow