圆锥齿轮装配后,无负荷检验接触点时,斑点位置应在齿的(),以免重负荷时,大端区应力集中造成很快磨损。
A、中部稍偏小端
B、中部
C、中部稍偏大端
参考答案:A
Amazing! Too many private cars are trapped on the highways which is free of charge for the first time, causing heavy traffic jams, some even _______ for several hours.
A.held up
B.broken up
C.taken up
D.given up
压力表的型号中,Y代表(),100代表()。