正确答案: C
the piston
题目:In four strokes engine, the cycle of events is completed in four strokes of ().
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学习资料的答案和解析:
[单选题]二冲程十字头式柴油机活塞运动部件横向校中的目的是使活塞与气缸套在()方向的间隙符合要求;导板和滑块之间的()间隙符合要求。
左右/工作面
[单选题]螺旋桨的缺陷主要有()。Ⅰ.腐蚀;Ⅱ.桨脱落;Ⅲ.振动;Ⅳ.变形;Ⅴ.裂纹和折断。
Ⅰ+Ⅳ+Ⅴ
[单选题]Here some oil in the oily water separator, as a result of its lower (), will separate and rise into the oil collection space.
density