在包糖衣片时，下列关于糖衣层的描述错误的是（） A.一般要包10～15层 B.在包完

某次知识竞赛共出了25道题，评分标准如下：答对1题加4分；答错1题扣1分；不答记0分，已知小明不答的题比答错的题多2道，他的总分为74分，则他答对了（    ）。

儿童期和青春期的碘缺乏的主要表现为（）。

A.高碘性甲状腺肿

B.“3D”症状

C.甲状腺肿

D.脚气病

补全对话.根据下面对话中的情景,在空白处填入恰当的句子使对话恢复完整

W: Oh, hi, Mike. You look tired.____1____

M: I've just got back from Florida.

W: Oh, was it fun?

M: Yes, I spent every morning sleeping lazily on the beach.

W: You lucky thing. I went on an activity holiday in England. The map staff had a bell to wake us every

      morning.  It rang very loudly.

M:     2____

W: It was. Let's talk about Florida instead.___3____

M: I went to Sea World.    4_____

W: Don't they treat the animals cruelly?

M: Well, there was a show with whales and dolphins. But I think they enjoy performing. The dolphins

      jump so high and the whales make a huge splash. Also, Sea World saves many animals    5____

如何选择HPLC流动相

绩效考评指标体系与考评评价标准包括( )。

A．是否全面完整

B．是否强调事实

C．是否有吸引力

D．是否切实可行

E．是否科学合理