单项选择题
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
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相关考题
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单项选择题
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 -
单项选择题
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.fresh water
B.sea water
C.cooling oil
D.emulsion -
单项选择题
In a （） engine the charge of air in the cylinder before compression commences is above atmospheric pressure.
A.pressure charged
B.naturally aspirated
C.contaminated
D.high speed diesel
