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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

The main source of fuel injection system malfunctions is （）

A.improper adjustments
B.contaminated fuel
C.coated fuel lines
D.excessive vibration

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The most crucial time for any bearing with regards to lubrication is （）

A.during low loads
B.after proper oil viscosity is reached
C.during starting
D.after cleaning filters

单项选择题

If a main propulsion diesel engine hunts excessively at idle speed, you should （）

A.adjusts the idle speed control
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单项选择题

The amount of fuel delivered for each cycle must be in accordance with the engine load, and the same quantity of fuel must be delivered to each cylinder for each power stroke at that load.Which of the following statements describes this requirement?（）

A.Proper timing
B.Accurate metering
C.Suitable injection rate
D.Suitable atomization rate

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