海船船员 - 三管轮 - 查题吧

单选题

The ___ engine is used for alternators and sometimes for main propulsion with a gearbox to

A. four-stroke
B. two-stroke
C. slow speed
D. reversible

单选题

The mechanical efficiency of an engine is always less than 100% _____ losses occurring in

A. because
B. since
C. due to
D. owing to

单选题

The oil sump, a light welded design, is mounted on the engine block from below and sealed

A. O-ring
B. gasket
C. washer
D. packing

不定项选择题

在内燃机中柴油机的本质特征是（）。

A. 用柴油做燃料
B. 外部混合
C. 内部燃烧
D. 压缩发火

单选题

In the voyage, duty officer should inform. ____ situation to the duty engineer immediately.

A. in /out port
B. passing through big bridge
C. big steering angle for direction changing
D. in /out port and passing through big bridge

单选题

______ means the level for which minimum appropriate protective security measures shall be

A. Security level 1
B. Security level 2
C. Security level 3
D. Lowest safety level

单选题

When the opening pressure of a diesel fuel injector is greater than that specified by the

A. quantity of fuel injected is decreased
B. quantity of fuel injected will always be increased
C. start of injection is advanced
D. duration of injection will always be greater

单选题

A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under

A. reduce load
B. check your exhaust
C. adjust cooling water temperature
D. increase lube oil flow

单选题

Stainless steel is material commonly used for temperatures up to 50℃; beyond that and for

A. stainless steel
B. temperature
C. 50℃
D. other materials

单选题

Because of the reduced _____ in the vacuum boiling evaporator, some of the sea water boils

A. temperature
B. water level
C. pressure
D. rate of flow

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