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问题 单项选择题

以下哪一项不是新型选择性抗胆碱药长托宁的作用特点

A．长托宁主要选择性作用于M受体亚型M1、M3

B．长托宁主要作用部位：脑、腺体和平滑肌等

C．长托宁作用较阿托品强，有效剂量小，作用时间长，不良反应少

D．对心脏或神经元突触前膜M2受体无明显作用

E．对心率有明显影响

答案

参考答案：E

单项选择题

George is a young man. He does not have a wife, but he has a very big dog and he has a very small car, too. He likes playing tennis. Last Monday he played tennis for an hour at his club, and then he ran out and jumped into a car. His dog came after him, but it did not jump into the same car. It jumped into the next one.
"Come here, silly dog!" George shouted at it but the dog stayed in the other car.
George put his key into the lock of the car, but the key did not turn. Then he looked at the car again. It was not his! He was in the wrong car! And the dog was in the right one! "He’s sitting and laughing at me!" George said angrily. But then he smiled and got into his car with the dog.

George has a beautiful new car.

A. Right.


B. Wrong.

C. Doesn’t say.
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单项选择题

《选煤厂安全规程》规定，配电室（点）入口处应当悬挂（）警示牌。

A.非工作人员严禁入内

B.工作人员的名单

C.操作规程

D.禁止吸烟
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