正确答案: C
左拱形
题目:曲轴的臂距差对应着曲柄的变形,若臂距差小于零,则在水平平面内曲柄呈()。
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学习资料的答案和解析:
[单选题]检查艉轴与曲轴的同轴度误差的方法不能用()。
指针法
[单选题]沿海及内河的船舶,其螺旋桨直径D()m时,螺旋桨和艉轴允许采用有键环氧树脂连接。
C.<4.5
[单选题]Diesel engines are started by supplying () into the cylinders in the appropriate sequence for the required direction.
compressed air
[单选题]Which of the following firing order may be used for an 6 cylinder engine?()
1-5-3-6-2-4