海船船员 - 船舶动力装置 - 查题吧

单选题

动力装置的加速性也是动力装置机动性指标之一，是指发动机由（）开始到（）的时间。

A. 起动/发出全功率所需
B. 最低稳定转速/最大连续运转转速所需
C. 起动/100%标定转速所需
D. 起动/船舶定速所需

单选题

Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.

A. temperature
B. pressure
C. engine speed
D. all of the above

单选题

In the event of the cylinder starting valve leakage （） would pass into the air pipes and ignite the oil deposited.

A. cooling water
B. vapor from the boiler
C. starting air
D. hot gase

单选题

A charge of fresh air is drawn into the engine cylinder and then （） by the moving piston（） very high pressure.

A. pressed；to
B. pressurized；with
C. pushed；in
D. compressed；to

单选题

A high temperature alarm or （） which will melt is used to guard against the explosion of compressor air pipelines.

A. a flame trap
B. a relief valve
C. a fusible plug
D. a bursting ca

单选题

Which of the following statements describes the function of an expansion tank in a diesel engine cooling system?（）

A. Maintains a constant head on the system
B. Reduces the likelihood of air or steam pockets formation
C. Provides a low pressure point for the addition of makeup cooling water
D. All of the above

单选题

An increased pressure differential between the inlet and outlet of a strainer usually indicates the strainer is （）

A. holed
B. fouled
C. clean
D. dry

单选题

艉轴承密封装置油压试验是采用重力油柜润滑油，从泵油至回油连续（）min之内不准漏油。

A. 6
B. 5
C. 4
D. 3

单选题

Modem engines （） exhaust gas driven turbo-chargers to supply pressurized fresh air for scavenging and supercharging.

A. make use of
B. have made the use of
C. by means of
D. make advantage of

单选题

（） device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.

An automatic
B. A transmission
C. A self-regulating
D. An interlocking

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