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單項選擇題

In a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is free to rise into the oil collecting space Whats the meaning of "it" in the sentence above?（）

A.a separator
B.oil
C.water
D.an oil collecting space

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單項選擇題

In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.

A.a service tank
B.a settling tank
C.an expansion tank
D.a double bottom tank

單項選擇題

In a central cooling system, used in some modem ships, sea water is supplied to cool （）which will circulate to other individual cooler, greatly reducing the corrosion problems.

A.main bearings
B.sea water
C.cooling oil
D.lower temperature fresh water

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