正确答案: D
电化学和静电
题目:曲轴轴颈的腐蚀主要是()腐蚀。
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学习资料的答案和解析:
[单选题]下列检验中,属于活塞运动部件平台检验的项目是()。
连杆大小端轴承孔的平行度检验
[单选题]In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?()
The boiler vent valves should be opened