【名词&注释】
电化学(electrochemical)、工作面(face)、气缸中心线
[单选题]曲轴轴颈的腐蚀主要是()腐蚀。
A. 化学
B. 电化学
C. 静电
D. 电化学和静电
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学习资料:
[单选题]下列检验中,属于活塞运动部件平台检验的项目是()。
A. 连杆大小端轴承孔的平行度检验
B. 机座上平面的平面度检验
C. 导板工作面与气缸中心线的平行度检验
D. 气缸中心线与曲轴中心线的垂直度检验
[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?()
A. The safety valve escape piping should be disconnected from the valve body and a blank inserted
B. The boiler vent valves should be opened
C. All handhole/manhole covers should be tightened up as much as possible to preclude any leaks
D. All of the above
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