下列不属于系统软件的是A．调试程序 B．计算机辅助设计程序 C．编译程序 D．数据库

酸循环系统循环罐连接有（），用于酸的热循环和保持酸液浓度，并当生产线停下时收集酸槽中的酸液。

阅读理解

     Body language is the quiet, secret and most powerful language of all! It is said that our body

movements communicate about 50 percent of what we really mean while words only express 7 percent.

So, while your mouth is closed, your body is just saying...

     Arms. How you hold your arms shows how open and receptive you are to people you meet. If you

keep your arms to the sides of your body or behind your back, this suggests you are not afraid of taking on whatever comes your way. Outgoing people generally use their arms with big movements, while quieter

people keep them close to their bodies. If someone upsets you, just cross your arms to show you're

unhappy!

     Head. When you want to appear confident, keep your head level. If you are a monitor in class, you

can also take on this position when you want your words to be taken seriously. However, to be friendly in

listening or speaking, you must move your head a little.

     Legs. Your legs tend to move around a lot more than normal when you are nervous or telling lies. If

you are at interviews, try to keep them still!

     Posture (姿势). A good posture makes you feel better about yourself. If you are feeling down, you

normally don't sit straight, with your shoulders inwards. This makes breathing more difficult, which can

make you feel nervous or uncomfortable.

     Mouth. When you are thinking, you often purse your lips. You might also use this position to hold back an angry comment you don't wish to show. However, it will probably still be noticed, and people will know you're not pleased.

     Face. When you lie, you might put on a false

face. But that expression would crack briefly, allowing displays of true emotions such as happiness,

sadness, disgust (厌恶) and fear to come through.

1. When someone is keeping his arms behind his back, he tries to tell you that       .

A. he is outgoing

B. he is angry

C. he is not afraid

D. he is cool

2. If you want to appear confident, you should       .

A. move your arms a lot

B. keep your head level

C. move your head a little

D. cross your arms

3. Which of the following movements tells someone is nervous?

A. Moving around a lot more than normal.

B. Not sitting straight with the shoulders inwards.

C. Having the lips pursed to hold back an angry comment.

D. Keeping the arms to the sides of the body.

4. What can we infer from the passage?

A. Different people in different countries must have the same understanding of the same body movement.

B. Body language can express more meanings than words do in communication.

C. We cannot communicate with others without words.

D. It's not polite to use body language in formal communication.

5. Which of the following can be the best title of the passage?

A. Body language, the most commonly used language

B. Arms tell more than legs

C. Facial expressions tell the truth

D. One simple movement lets slip secrets of mind

冷、热源机房设于地下室时，机房内人员操作8小时等效连续声级不允许为（）dB（A）.

A、85

B、90

C、95

D、100

判定一宗房地产是否为收益性房地产，关键是看该房地产( )。

A．目前是否有经济收入
B．过去是否带来了经济收益
C．目前的收入是否大于运营费用
D．是否具有直接产生经济收益的能力

对于羊水过少的病因不正确的是

A．胎儿慢性缺氧致肾血流量减少

B．肺泡发育差，分泌的羊水少

C．使用前列腺素酶抑制剂时间过久

D．低氧血症导致各个脏器血流量重新分布

E．母体血容量增多