能说明A元素的非金属性比B元素的非金属性强的是（ ） A．A原子得到电子的数目比

用所给词的适当形式填空。

1. By the time I got to the bus stop, the bus had already_____(leave).

2. They_____(make) a lot of friends since they came to our school.

3. She was so_____(embarrass) that he didn't know what to say at the moment.

4. They have been_____(marry) since eight years ago.

5. That's the_____(end) of the story.

6. The mice all______(flee) away when the cat appeared.

7. We_____(learn)eight units by the end of last week.

8. It is three years since he_____(leave)

9. My sister_____(watch) TV when I_____(get) home yesterday.

10. Keep quiet. Dad_____(listen) to the news now.

大学生小陈9月份到某国有控股公司工作，每月领取一份工资。他还持有本公司的一些股票，年底获得了股息收入。这表明，决定小陈收入的分配方式有      （   ）

①按劳分配    ②按需分配    ③按生产要素分配  ④按技术要素分配

A．①②④

B．①③

C．①

D．③

离心泵转子窜量大原因及处理办法？

患者，男，35岁，无外伤史，右侧面部麻木，闭眼功能障碍2天，无听力下降，无耳鸣，耳痛，首先应考虑

A．特发性面瘫

B．Hunt综合征

C．听神经瘤

D．颈静脉球瘤

E．耳源性面瘫

皮下注射的目的是( )。

A．使药物迅速发挥疗效

B．局部麻醉用药

C．预防接种

D．注射刺激性较强或药量较大的药物

E．做各种药物过敏试验