正确答案: B
裂纹和过度磨损
题目:水润滑艉轴铜套常见的失效形式有()。
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学习资料的答案和解析:
[单选题]液压拉伸器是利用油压使螺栓()后轻易地上紧或松脱螺栓。
产生弹性变形
[单选题]转舵时声音异常可能是()。
舵承间隙过大
[单选题]For one or two types of engine,the piston and rod can be withdrawn downwards from the cylinder into the crankcase and then out through ().
the crankcase door
[单选题]The main bearing metal is a lining ().
inside the bearing