脑穿通畸形与脑裂畸形主要不同点在于（）A、致病时间。  B、诱发因素。 C、病变范围

特权规则

Despite the fact that Jack has lived in USA for many years，he finds it no easy to _____himself to its culture and customs.

A．adopt

B．adapt

C．apply

D．concentrate

V462B1酸高位槽的直径和高分别是多少？

下列有关乳腺癌的危险因素的叙述错误的有（）。

A.哺乳时间长

B.月经初潮年龄早

C.绝经早

D.初次足月产年龄早

E.有乳腺癌家族史

行政强制是一种限权行为。