莨菪碱类药物结构中具有哪些基团时其中枢作用最强A．6-位有β羟基，6，7位上无氧桥B

单词拼写。

1. He c____ working as if nothing had happened to him.

2. The weather was freezing cold and mother put another b____ on the bed.

3. Parents should e____ their children to behave well.

4. He had a feeling of t____ when he talked about the prison.

5. Too many____ (活动) take up too much of our precious time for study.

6. They were ____ (战斗) in order to defend their independence.

7. He ____ (接受) a present from his friend.

8. All countries, big and small, should be ____ (平等).

9. The world will never forget the ____ (残忍) of the American soldiers to Iraqi prisoners.

10. Do you know the person who o____ the meeting yesterday?

发动机凸轮轴的的修理级别一般分4等级，极差为（）mm。

A、0.010

B、0.20

C、0.30

D、0.40

在解决国际争端问题上《联合国 * * 》规定了联合国本身及其会员国应遵循的原则是

A．以和平方式解决国际争端

B．集体协作解决国际争端

C．主权国家可以恰当行使自卫权

D．派遣维和部队调解争端双方

乳化时间指（）

A、将乳化剂施加到被检物表面的操作时间

B、从施加乳化剂到开始清洗处理的时间

C、从施加乳化剂到清洗处理结束的时间

D、从施加乳化剂到施加显像剂的时间

全液压输油臂立柱和内、外臂及快速连接器之间是由4个回转接头连接起来的。