直齿圆柱齿轮(α=°20,h∗a=1)实现连续传动时,其重合度ε必须满足()。
A.0<ε<1
B.1<ε<2
C.ε>2
D.ε>1.2
参考答案:B
In relation to the Zimbabwe legal system, explain the role and duties of the following officers of the court in the administration of justice:
(a) Judges; (4 marks)
关于女性生殖系统生理的叙述,正确的是()
A.绝经后女性卵巢功能衰退,体内无雌激素
B.雌三醇是雌二醇与雌酮的代谢产物
C.排卵后的卵泡称为闭锁卵泡
D.女性有月经来潮即提示有排卵
E.卵巢不分泌雄激素