正确答案: B
受力方向
题目:曲轴臂距差的符号表明曲轴()。
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学习资料的答案和解析:
[单选题]在测量螺旋桨螺距时,不需测量的参数是()。
测量截面的桨叶厚度
[单选题]舵杆表面的裂纹应采用()检查。
磁力探伤
[单选题]The plunger in the fuel injector pump, usually operated by a (), is driven up and down when working.
rack and pinio
[单选题]To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of () and detergency.
alkalinity