正确答案: C
Ⅰ+Ⅱ
题目:中间轴承的布置如果数量多、间距小()。Ⅰ.则轴线变形的牵制作用增强;Ⅱ.会使轴承增加附加负荷
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学习资料的答案和解析:
[单选题]滚动轴承累积工作时间达到其额定使用寿命时即应换新轴承。一般累积工作时间约为()h。
8000
[单选题]() is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.
An air distributor
[单选题]Dirty oil must be () before being used again.
purified