绝对禁止使用（）清理冷却器表面，以防将部件损坏。 A.机械法 B.化学法 C.火烤的

下列哪项属于肾损伤的处理原则（）

A.抢救生命，尽量保留肾

B.对于大出血，休克的患者密切观察生命体征

C.绝对卧床休息2-4周

D.应及早下床活动，以免发生血栓

E.注意补充血容量

（4分）某同学用伏安法测一节干电池的电动势E和内电阻r，他测出6组数据并把它们描在U—I图中，如图所示。请你在图中做出必要的图像根据图像求出该电池的电动势E=     V，电阻r =     Ω（结果保留两位小数）

句型转换。

1. The old man was too tired to walk on.

  The old man was _______ tired _______ he couldn't walk on.

2. Mike is the tallest in his class.

  Mike is taller _______  ________  ________  ________ in his class.

3. I will go to bed when I finish writing the letter.

  I _______ go to bed _______ I finish writing the letter.

4. It's about half an hour's walk.

  It takes about half an hour to go there _______  ________.

5. Work hard, and you will get good marks.

  _______  _______ work hard, you'll get good marks.

6. John was busy at 9 last night.

He was writing his English composition at 9 last night.

John _______  _______  ________ his English composition at 9 last night.

心室颤动的症状体征不包括（）

A.心音强弱不等

B.意识丧失

C.脉搏触不到

D.血压测不到

E.大汗淋漓

国民经济评价主要是考察项目投资在财务上的潜在获利能力。 ( )