测量值大于给定值时输出增大的调节器是反作用调节器。

任务型阅读。仔细阅读下面的短文并按要求完成后面的小题。

     It is said that about half of the people in China smoke. Many young boys and girls have the habit of

smoking, though they are middle school students.

     More and more people have come to realize how serious this problem is. But they are never bored

with it. (1) Some people think it is a kind of fashion, some think it is of great fun and others think that

smoking can refresh themselves.

     Smoking causes many illnesses. A lot of people always cough (2) ______ ______ smoking. The most

serious illness caused by smoking is lung cancer. At the same time smoking is a waste of money. Besides,

careless smokers may cause dangerous fire. 

     As we all know, smoking does great harm to human beings. In order to keep healthy, we should get rid

of the bad habit of smoking. Please stop smoking at once.

1. 将(1)句划线部分译成汉语：

    ___________________________________________________________

2. 在(2)句的空白处填入适当的词使句意完整、上下文通顺：______ ______ 

3. What does smoking cause?

    ___________________________________________________________

4. 在文中找出与“We should give up smoking so that we can keep fit.”意思相同的句子。 

    ___________________________________________________________

5. 在文中找出能表达主题的句子。 

   ___________________________________________________________

若两个球的表面积之比是4∶9，则它们的体积之比是          ．

1905—1907年革命派与保皇派论战的意义是（）。

A、划清了革命与改良的界限

B、传播了民主革命思想

C、促进了革命形势的发展

D、主张贫苦农民“夺富人之田为己有”

谷皮中不含（）

A.淀粉

B.脂肪

C.无机盐

D.灰分

E.纤维素

不按规定穿戴劳保用品；不按规定组织和参加安全活动，属于什么级别的违章？