一对渐开线直齿圆柱齿轮传动的重合度与齿轮的()无关。
A.模数
B.压力角
C.齿数
D.齿顶圆压力角
参考答案:A
Which one of the following is a change in an accounting principle()
A. A change from FIFO to LIFO.
B. Recording a prior period adjustment.
C. A change in the estimated service life of machinery.
化疗最严重的毒性反应是()。
A.胃肠道反应
B.脱发
C.脉管炎
D.骨髓抑制
E.肝肾毒性反应