卵泡早期分泌量少,其后逐渐增高,排卵前达高峰,后降低,黄体期再度增高是指()。
A.雌激素
B.孕激素
C.雄激素
D.促卵泡素
E.促黄体素
参考答案:A
"Neal,listen,"she said,looking straight at him."I ask you not to get________in this kind of matter.It's none
of your business."[ ]
A. caught
B. involved
C. attached
D. connected
以下是切铁后质量指标要求的内容有()
A、合格证
B、垂直度
C、印刷外观
D、硬度