左心衰肺水肿吸氧方法为 （） A.高压氧疗 B.高流量给氧 C.面罩给氧 D.持续

用 watch, see, look at, look 填空。

1. I______around but I can't ______anybody.

2. —Who isn't here?

    —Let me ______.

3. —What do you do on Sundays?

    —I______TV.

4. They ______ ______ my family photo.

5. If you ______under the table, you may

    ______a cat there.

6. I______some people in the garden.

7. Let us go to ______a basketball match.

8. ______! That is a bird.

9. Can you______the desk?

10. I ______Mr. Smith at school.

11. 他想要把他的帽子放在桌子上.

      He______put his hat on the desk．

12. 这位男士想要一位护士照顾他.

      This man______a nurse______ look after him．

13. 我喜欢看动作片.

      I like to see______ ______.

14. 你喜欢什么样的电影?

     ______ ______ ______ movies do you like?

电动机运行时要随时监视。

从安全角度出发，数据库至少应（）备份一次。

A.每两周

B.每月

C.每季度

D.每半年

简述STR自动分型的特点。