【名词&注释】
螺旋桨(propeller)、耐磨性(wear resistance)、柴油机(diesel engine)、绝缘性(insulating)、活塞杆(piston rod)、十字头(crosshead)、二冲程(two-stroke)
[单选题]活塞运动部件在船上安装前,应在车间平台对其()进行复验。
A. 加工质量
B. 装配质量
C. 位置精度
D. 形状精度
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学习资料:
[单选题]二冲程(two-stroke)十字头(crosshead)式柴油机活塞运动部件的平台检验主要是检查()零件间的相互位置关系。
A. 活塞和活塞杆
B. 十字头(crosshead)、滑块和连杆
C. 活塞运动部件
D. 机座固定件
[单选题]由于铁梨木需进口,价格较高,故采用()作为铁梨木的代用材料。
A. 尼龙
B. 桦木层压胶木
C. 橡胶
D. 赛龙
[单选题]桦木层压胶木是铁梨木的代用材料,具有材质致密、坚硬、耐热、绝缘性好、成材率高,缺点是()。Ⅰ.耐磨性差;Ⅱ.耐蚀性差;Ⅲ.耐水浸性差;Ⅳ.刚性差;Ⅴ.脆性大。
A. Ⅱ+Ⅲ
B. Ⅰ+Ⅴ
C. Ⅱ+Ⅴ
D. Ⅱ+Ⅳ
[单选题]螺旋桨C区内的缺陷采用()工艺进行修理。
A. 不可焊补
B. 焊补
C. 有机胶黏剂粘补
D. 修磨
[单选题]Charging-air pressure increases if there is incorrect combustion and drop in the () of the diesel engine.
A. machine efficiency
B. machinery efficiency
C. mechanical efficiency
D. mechanics efficiency
[单选题]Lubricating oil for an engine is stored at the bottom of the (), known as the sump or in a drain tank located beneath the engine.
A. sea cheat
B. air receiver
C. crankcase
D. water box
[单选题]The injector pump is operated by a cam which drives the () up and down.
A. piston
B. drum
C. plunger
D. barrel
[单选题]To successfully reduce an excessively high diesel engine exhaust gas temperature, you should ().
A. reduce the engine driven fuel pump outlet pressure
B. retard the fuel injector timing to reduce power
C. increase the fuel rack setting
D. reduce the load on the engine
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