正确答案: B
回油孔调节式
题目:发生在高压油泵柱塞上的穴蚀以()高压油泵最严重。
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学习资料的答案和解析:
[单选题]艉轴裂纹主要发生在()等处。Ⅰ.法兰根部;Ⅱ.工作轴颈;Ⅲ.铜套接缝处轴颈;Ⅳ.键槽根部;Ⅴ.锥部大端截面变化。
Ⅲ+Ⅳ+Ⅴ
[单选题]In a complete oil/water separator, more oil will separate out onto the underside of these plates and travel outwards until it is free to rise into the oil collecting space Whats the meaning of "it" in the sentence above?()
oil