正确答案: D

任意两垂直平面上扭转

题目：轴系中心线的偏差度反映的是（）的程度。

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学习资料的答案和解析：

[单选题]In a diesel engine, excessive cylinder liner wear will cause （）(1) increased blow-by(2) wear between the piston ring and groove

both (1) and (2) are correct

[单选题]Most medium and slow speed diesels are started by what medium?（）

Compressed air