调车人员在作业前选择制动车辆及手制动机类型、位置等的过程称为（）。A.拧闸 B.磨闸

用适当的冠词填空，不需要处用“/”表示。

1. There is ___________ pen and ___________ pencil in my pencil-box, ___________ pen is red,

    and ___________ pencil is black.

2. Miss Wang is ___________ English teacher. She teaches in ___________ primary school.

3. I like ___________ yellow skirt in the window.

4. Su Hai doesn't like ___________ old bike.

5. It's ___________ 18th of December.

6. Do you have ___________ watch?

7. I don't like playing ___________ guitar.

8. What's ___________ score?

9. Is Liu Tao in ___________ corner with ___________ ball?

10. I get up at seven in ___________ morning.

11. What's this?  It's ___________ orange.

12. There's ___________ " h" in the word " hour".

13. Liu Tao is ___________ tallest boy in our class.

14. ___________ students here study very hard.

15. There is a garden in ___________ front of ___________ house.

胎儿窘迫的病因是（）。

A.孕妇患有慢性肾炎

B.胎儿畸形

C.产程延长

D.脐带打结、扭转

E.子宫过度膨胀

口袋中有其中白球9个，红球5个，黑球6个，现从中任取10个，使白球不少于3个，不多于7个，红球不少于2个，不多于5个，黑球不多于3个的取法种数是______．

阅读下面诗歌，然后回答问题。(8分)

辋川闲居赠裴秀才迪

王维

寒山转苍翠，秋水日潺湲。

倚杖柴门外，临风听暮蝉。

渡头余落日，墟里上孤烟。

复值接舆①醉，狂歌五柳前。

注：①接舆：春秋时楚国隐士，佯狂遁世，这里借指裴迪。

(1)诗中塑造了一个怎样的诗人形象?结合诗句简要分析。(4分)

答：                                                                      

(2)请任选一个角度简要赏析“渡头余落日，墟里上孤烟”两句景物描写的妙处。(4

分)

答：                                                                     

电动机电流表所指示电流超过额定电流值，说明电网电压过低。（）