当铁梨木艉轴承的轴承间隙和铁梨木板条厚度均不合标准时，应采用

【名词&注释】

低速柴油机(low speed diesel engine)、标准时(standard time)

[单选题]当铁梨木艉轴承的轴承间隙和铁梨木板条厚度均不合标准时，应采用（）修理。

A. A．换新铜套
B. B．换轴承
C. C．换下瓦
D. D．换艉轴

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学习资料：

[单选题]在船上拆卸下列中、低速柴油机的螺栓时可能使用液压拉伸工具（）。Ⅰ.底脚螺栓；Ⅱ.贯穿螺栓；Ⅲ.气缸盖螺栓；Ⅳ.主轴承螺栓；Ⅴ.连杆螺栓。

A. Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ
B. Ⅱ＋Ⅲ＋Ⅳ
C. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ
D. Ⅰ＋Ⅱ＋Ⅲ＋Ⅳ＋Ⅴ

[单选题]换新主机的连杆大端轴瓦时，其上瓦与曲柄销颈在（）内的接触面积不少于（）。

A. 40°～60°/75%
B. 40°～60°/85%
C. 60°～90°/75%
D. 60°～90°/85%

[单选题]船舶轴系修理后，在安装时应符合下列要求（）。Ⅰ.曲轴轴系稍高于尾轴轴线.Ⅱ.总曲折为下开口

A. 仅Ⅰ对
B. 仅Ⅱ对
C. Ⅰ+Ⅱ
D. Ⅰ，Ⅱ都不对

[单选题]It is very important that each cylinder should be （） scavenged before the charged air is compressed.

A. well
B. good
C. excellent
D. respectively

[单选题]The distance from TDC to BDC of the diesel engine is called （）.

A. gap
B. clearance
C. radius
D. stroke

[单选题]The injector pump is operated by a cam which drives （） up and down.

A. the needle valve
B. the plunger
C. the piston
D. the cylinder

[单选题]The starting air system usually has （） to prevent starting if anything is not in order.

A. drain cocks
B. vent valves
C. counteracts
D. interlock

[单选题]When turning the engine with turning gear, you should keep the indicator cocks （）.

A. attached to the indicators
B. opened
C. closed
D. broke

[单选题]When an auxiliary boiler is panting and emitting black smoke, you should （）.

A. increase the fuel oil temperature
B. decrease the fuel oil temperature
C. decrease the fuel oil supply pressure
D. increase the air supply

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