问题 问答题 简答题

在《立井施工安全管理的专项规定》中,有哪些要求“双套”的?

答案

参考答案:

1、钩头装置设置双保险;

2、摘挂钩头实行双监控;

3、提升司机实行双监控;

4、绞车供电实行双回路;

5、吊挂检查做到双把关;

6、上下信号配备两套。

单项选择题

Aspirin is one of the safest and most effective drugs invented by man. The most popular medicine in the world today, it is an effective pain reliever. Its bad effects are relatively mild. It is also cheap.For millions of people suffering from arthritis, it is the only thing that works. Aspirin, in short, is truly the 20th-century wonder drug. It is also the second largest suicide drug and is the leading cause of poisoning among children. It has side effects that, although relatively mild, are largely unrecognized among users.Although aspirin was first sold by a German company in 1899, it has been around much longer than that. Hippocrates, in ancient Greece, understood the medical value of tree barks and leaves which today are known to contain a chemical found in aspirin. During the 19th century, there was a great deal of experimentation in Europe with this chemical, and it led to the introduction of aspirin. By 1915, aspirin tablets were available in the United States.A small quantity of aspirin relieves pain and inflammation. It also reduces fever by affecting some of the body’’s reactions. Aspirin is very irritating to the stomach lining. The best way is to chew the tablets before swallowing them with water, but few people can stand the bitter taste. Some people suggest crushing the tablets in milk or orange juice.

The second paragraph points out that________.

A.aspirin is always safe

B.aspirin can be dangerous

C.aspirin has been long used

D.aspirin is not truly effective

判断题