【名词&注释】
磨损率(wear rate)、低速柴油机(low speed diesel engine)、铸铁气缸套(cast iron cylinder sleeve)、不符合(inconformity)
[单选题]尾轴锥形轴段出现裂纹的主要原因是()。Ⅰ.疲劳;Ⅱ.振动;Ⅲ.撞击
A. Ⅰ+Ⅱ
B. Ⅰ+Ⅲ
C. Ⅱ+Ⅲ
D. Ⅰ+Ⅱ+Ⅲ
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学习资料:
[单选题]大型低速柴油机铸铁气缸套的异常磨损率()mm/kh。
A. >0.08
B. >0.1
C. >0.2
D. >0.5
[单选题]检验发现轴系的同轴度不符合(inconformity)要求,为了调整轴系状态,可采用()的修理方案。Ⅰ.调节第一道中间轴承位置;Ⅱ.调节各道中间轴承位置;Ⅲ.偏心镗削艉轴承;Ⅳ.改变主机位置;Ⅴ.改变局部中间轴承位置。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅱ+Ⅳ
C. Ⅲ+Ⅳ
D. Ⅰ+Ⅲ+Ⅳ
[单选题]Fuel is delivered into the combustion space by ().
A. a cooling system
B. a lubricating system
C. an electric system
D. an injection system
[单选题]Once all cylinders are firing regularly, () is shut off.
A. the exhaust valve
B. the starting air
C. the inlet valve
D. the fuel oil
[单选题]Vents are led from the engine to head tank () from the cooling water.
A. for the release of air
B. for the release of water
C. in order to the release of air
D. because the release of air
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