正确答案: C
[e]•ω
题目:平衡精度的等级是按照()来划分的。
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学习资料的答案和解析:
[单选题]中间轴承有()。Ⅰ.上瓦和下瓦D.仅有下瓦;Ⅲ.上下瓦可以互换
仅Ⅱ对
[单选题]Shims of different thicknesses are inserted between the shells to enable adjustment of ().
the bearing clearances
[单选题]What is an advantage of diesel over steam turbine propulsion? ()
Less fuel consumption per SHP