对电气设备的验电要求有（）。A、验电前，应先在有电设备上进行试验，确证验电器良好；

肝郁气滞型缺乳的主症包括（）

A.产后乳少

B.产后无乳

C.胸胁胀闷

D.食欲减退

E.脉弦数

用所给单词的适当形式填空。

1. These shoes are much too __  __ (big) for me.

2. It is very ____ (important) for us to learn maths well.

3. Now John works ___ _ (careful) than before. His parents are proud of him.

4. Things are much ____  (light) on the moon than onthe earth.

5. Our school is more _____ (beauty) than yours.

6. I think apples are ____  (delicious) of all the fruits.

7. China has ____  (large) population in the world.

8. Pearl River is one of the longest           (river) in China.

9. The Yellow River is the ____  (two) ____ (long) river in our country.

10. Edison was a great ____  (invent). He ____ (invent) so many ____   (invent) since he was a child.

在工作岗位分析准备阶段，主要应当做好哪些工作

造成伦敦烟雾事件的大气污染物是

A．氮氧化物

B．碳氢化物

C．烃类化物

D．烟尘利二氧化碳

E．多环芳烃化合物

满足哪些条件，系统性红斑狼疮可以安全妊娠（）。

A.无重要脏器（肾脏、心脏、中枢神经系统）严重损害

B.病情稳定一年或以上

C.细胞毒免疫抑制（环磷酰胺，甲氨蝶呤）停药半年

D.激素仅用小剂量维持

E.同时符合以上条件