6～10KV架空线路常采用的保护是（）。 A.过电流保护 B.电流速断保护 C.接地

基托蜡型应该适当加厚的区域为()

A．牙槽嵴区域

B．上颌硬腭区域

C．骨隆突区

D．基托颊舌侧边缘

E．上颌腭侧基托边缘

阅读理解。

     In 1896, the first modern Olympic Games was held in Athens, Greece. Since then many countries have

successfully held the Olympics, such as England, France, Germany, Canada, the USA, Spain and Australia.

     After more than a century the Games returns to its hometown this year.

     When people hold the Olympic Games, they always make an emblem (会徽). The emblem of the Athens

Olympic Games this year is a white circle of olive branches in the sky. Now Athens is developing a spirit of

peace. An officer said,"While in Athens, the world should be at peace. We hope the peace is not just for a

short time. We would like the message from the Athens Games to help countries come together and solve

(解决) their problems." Four years later, the Olympic Games will be held in China. And China has already

made a seal (印章) as the emblem of the Beijing 2008 Olympic Games. The emblem has a single Chinese

character on a red seal and means "Chinese seal-dancing Beijing". Below it, there are the words "Beijing 2008".

The character in the emblem is "Jing". It means "capital" of China and it is also like a runner or a dancer. The

running figure (人形) of the emblem shows the spirit of the Olympics- faster, higher and stronger.

1. In which country was the first modern Olympics held?

A. Greece.

B. Australia.

C. France.

2. What do people always make when they hold the Olympic Games?

A. An emblem.

B. A flag.

C. A map.

3. What message does the Athens Olympic Games want to give?

A. War.

B. Danger.

C. Peace.

4. How many years have passed when Athens again holds the Olympic Games?

A. 100.

B. 108.

C. 112.

5. The spirit of the Olympic Games is _______.

A. history and friendship

B. faster, higher and stronger

C. peace, friendship and development

成语“饮鸩止渴”原指喝毒酒解渴，用于比喻采取极有害的方法解决眼前困难，不顾严重后果。“鸩”是指放了砒霜的毒酒。砒霜是三氧化二砷（As₂O₃）的俗称，有剧毒。As₂O₃中As的化合价为 [     ]

A．－3         

B．－2         

C．+3        

D．+2

会计职业特征是维护（　　）。

A．单位利益　　　　　　　　　

B．单位责任人利益

C．国家和社会公众利益　　　　

D．会计人员利益

妻子:母亲:社会角色

A．水:冰:液体

B．父亲:儿子:家庭

C．冰糖:砂糖:糖精

D．石墨:金刚石:化学物质