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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(轮机专业) > 轮机英语 > 船舶电气与船舶安全

单项选择题

Which of following functions is not one of the functions of air conditioner?（）

A.refreshing the air
B.making person upset
C.adjusting the air humidity
D.adjusting the air temperature

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单项选择题

The oil discharge monitoring system in the oil tanker vessels is used for detecting the amount of oil discharged overboard to ensure that it does not exceed（）

A.15 liters nautical mile
B.30 liters nautical mile
C.60 liters nautical mile
D.100 liters nautical mile

单项选择题

To receive oil residues from the purification of fuel and lubricating oils in the machinery spaces, what kind of tank(s) should be provided on board?（）

A.bilge tank
B.sludge tank
C.overflow tank
D.oil collecting tank

单项选择题

Which cause of following will not lead to refrigeration plant short-cycle?（）

A.lack of refrigerant
B.refrigerant with much water
C.set defectively low pressure relay
D.no cooling water

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