正确答案: B
下滑速度
题目: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。
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学习资料的答案和解析:
[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。
流体/各种阀件、管路、泵、滤器、热交换器
[单选题]废气锅炉烟道温度在1100℃以上时可能发生()。
铸铁着火
[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-()。
<0
[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。
C.弯曲/不定
[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()。
2560mm
[单选题]The () is not properly set thus causing either advanced or retarded firing.
fuel injection pump
[单选题]The way to reduce () is to build up a film of lubricant between any two surfaces that rub against each other.
friction
[单选题]The development of oils () the increasing demands made by the steady rise in powers produced by modem diesels.
has kept pace with
[单选题]Passages are drilled in the crankshafts of diesel engines to provide lubricating oil to the ().
All of the above