正确答案: D
Ⅰ+Ⅱ+Ⅲ
题目:中间轴承之间的间距不能过大,这是因为()。Ⅰ.轴系制造安装困难;Ⅱ.轴的挠度增加;Ⅲ.易产生轴系的横向振动
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学习资料的答案和解析:
[单选题]连杆大小端孔中心线的平行度偏差不应超过()。
C.0.15mm/m
[单选题]Clearance volume scavenging in a turbocharged, four-stroke/cycle diesel engine is accomplished ().
during the valve overlap period