【名词&注释】
螺旋桨(propeller)、柴油机(diesel engine)、动力系统(dynamic system)、热交换器(heat exchanger)、船舶动力装置(marine power plant)、控制箱(control box)、防污染系统、不一定(not always)
[单选题]柱塞套筒进行滑动试验时,一般将柱塞抽出1/3左右后观察其()的情况。
A. 有无卡住
B. 下滑速度
C. 表面损伤
D. 表面变形
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学习资料:
[单选题]船舶动力装置的管路系统,是用以输送()的管系。由()等组成。
A. 流体/各种阀件、电动机、泵、控制箱(control box)
B. 流体/各种阀件、管路、泵、滤器、热交换器
C. 流体/动力系统、防污染系统、自动化系统
D. B+C
[单选题]废气锅炉烟道温度在1100℃以上时可能发生()。
A. 小的烟垢着火
B. 锅炉爆炸
C. 铸铁着火
D. 氢着火
[单选题]某曲柄的两主轴承在水平平面内位置偏左,曲轴轴线呈左拱形,则其Δ-()。
A. >0
B. <0
C. =0
D. 不一定(not always)
[单选题]柴油机各道主轴承下瓦磨损不同,使曲轴轴线状态产生()变形,臂距差的大小和方向产生()变化。
A. A.塌腰形/正值增大
B. B.拱腰形/负值增大
C. C.弯曲/不定
D. D.一定/一定
[单选题]某螺旋桨半径为2m,将装于其上的螺距规的水平杆旋转36°时量杆的升程为256mm,其局部螺距为()。
A. 25.6mm
B. 2560mm
C. 17.8mm
D. 1780mm
[单选题]The () is not properly set thus causing either advanced or retarded firing.
A. piston
B. fuel injection pump
C. crankshaft
D. oil ca
[单选题]The way to reduce () is to build up a film of lubricant between any two surfaces that rub against each other.
A. friction
B. collision
C. inertia
D. resistance
[单选题]The development of oils () the increasing demands made by the steady rise in powers produced by modem diesels.
A. has kept pace with
B. has kept pace to
C. has made pace with
D. has made pace to
[单选题]Passages are drilled in the crankshafts of diesel engines to provide lubricating oil to the ().
A. main bearings
B. connecting rod bearings
C. piston pin bushings
D. All of the above
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