【名词&注释】
异常现象(abnormal phenomena)、离心力(centrifugal force)、直线度(straightness)、中心线(center line)、柴油机气缸套(engine cylinder liner)、二冲程柴油机(two-stroke diesel engine)、穿透性裂纹、发生变化、冷却水温(cooling water temperature)、曲轴箱油(crankcase oil)
[单选题]A common trouble with the fuel pump plungers or fuel valve spindle is ().
A. broken down
B. stuck
C. oil leakage
D. carbonized
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学习资料:
[单选题]缸盖底面裂纹一般多产生在(),即有应力集中的部位。Ⅰ.阀孔周围;Ⅱ.阀孔边缘;Ⅲ.阀孔之间;Ⅳ.阀孔座面;Ⅴ.底面圆周方向。
A. A.Ⅰ+Ⅱ+Ⅲ+Ⅳ
B. B.Ⅰ+Ⅱ+Ⅴ
C. C.Ⅱ+Ⅲ+Ⅳ
D. D.Ⅱ+Ⅲ
[单选题]二冲程柴油机气缸套产生穿透性裂纹,柴油机运转时就会发现()异常现象。
A. A.冷却水温(cooling water temperature)度升高
B. B.膨胀水柜水位波动
C. C.滑油乳化变质
D. D.曲轴箱油(crankcase oil)位升高
[单选题]MANB&W6L42型船用柴油机气缸套最大内径增量为2mm,则最大缸径为()。
A. 418mm
B. 422mm
C. 420mm
D. 424mm
[单选题]增压器转子转动时产生的离心力是()。
A. 平面汇交力系
B. 空间汇交力系
C. 平面汇交力系或平面汇交力系
D. 均不是
[单选题]轴系校中状态发生变化主要包括轴系中心线的()发生变化。Ⅰ.直线度;Ⅱ.偏差度;Ⅲ.对中性;Ⅳ.同轴度;Ⅴ.曲折度。
A. Ⅱ+Ⅳ
B. Ⅰ+Ⅱ
C. Ⅰ+Ⅱ+Ⅲ
D. Ⅰ+Ⅲ+Ⅳ
[单选题]水润滑式艉轴非工作轴颈一般包覆()或()。
A. 铜套/橡胶
B. 铜套/玻璃钢
C. 玻璃钢/橡胶
D. 橡胶/塑料
[单选题]() provide the water to the pistons.
A. Pneumatic pipes
B. Hydraulic pipes
C. Telescopic pipes
D. Operating gas pipe
[单选题]In an engine with a pot-shaped piston, some lubricating oil from the main bearing will pass along a drilled passage in the crankshaft to the bottom end bearing and then up a connection rod to the ().
A. crosshead
B. crankpin
C. crank journal
D. gudgeon pi
[单选题]There is () in any water cooling system for a diesel engine allowing for expansion and water make-up in the system as well as air vent and chemicals addition.
A. a setting tank
B. a service tank
C. a head tank
D. an expansion joint
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