下列跨膜运输的生理活动中，属于主动运输的是（）。 A.甘油分子进入胃黏膜细胞 B.C

根据句意，用所给词的适当形式填空。

1. They received lots of ________ (compliment) on their wonderful performance.

2. He ________ (stick) his fork into a big piece of meat.

3. Thanks for ________ (invite) me to your birthday party.

4. I'm ________ (familiar) with the city, because it was my first time there.

5. In ________ (west) countries, people don't usually share the same dishes.

下列______是组播地址。

A．202.113.72.6

B．224.0.1.129

C．59.67.33.8

D．178.1.2.8

在稳定变温传热中，流体的流向选择（）时传热平均温度差最大

A、并流

B、逆流

C、错流

D、折流

上颌窦上壁为（）

A.翼腭窝、颞下窝

B.尖牙窝

C.眼眶底部

D.牙槽突

E.鼻腔外侧下部

在国内还有法院通知的未了结民事案件的中国公民不能出境。