地面和太空航天器之间的信息传输是利用 A.超声波 B.次声波 C.电磁波 D.光

题型:选择题

问题:

地面和太空航天器之间的信息传输是利用

A.超声波

B.次声波

C.电磁波

D.光导纤维

考点:电磁波的产生
题型:选择题

阅读理解。

    I read some stories about amazing people today. Here I'd like to share something

interesting with you. Xie Qiuping, a Chinese woman, has the longest hair in the world.

Her hair is 5,085 meters long! How amazing! Before I got to know this, I thought my hair

was quite long. It is nearly 50cm long. I don't know how she washes her hair.

    The tallest man in the world lived in the USA. His name was Robert Pershing Wadlow.

He was 2.72 metres tall. I want to know if he lived in a flat like mine, how could he go

into the room? The tallest man died in 1940.

    There is a man in France called Michael Lotito. He eats such items as metal (金属),

glass and rubber. He even once ate a model plane! How strange! I don't think metal is as

tasty (美味的) as sweets or chocolates.

1. Where does the woman with the longest hair come from? [ ]

A. France

B. The USA

C. Korea

D. China

2. The tallest man in the world died _____.[ ]

A. in the nineteenth century

B. in the twentieth century

C. in this century

D. about thirty years ago

3. Robert Pershing Wadlow was the _____ man in the world. [ ]

A. shortest

B. oldest

C. tallest

D. smallest

4. Once Michael Lotito ate _____. It's so amazing! [ ]

A. some sweets

B. a model plane

C. some hairs

D. a frog

5. How many amazing people are there in the passage? [ ]

A. One man and two women

B. Three men

C. Two men and one woman

D. Three women

题型:选择题

在某2L的密闭容器中加入0.1mol碘单质和足量钨(W),在943K时,发生反应W(s)+I2(g)⇌WI2(g),当I2的转化率为20%时,达化学平衡状态.

(1)反应从开始至平衡状态过程中用时20s,其平均反应速率v(WI2)为______.

(2)943K时,该反应的平衡常数K=______.

(3)若起始时,加入的碘为0.2mol(其他条件不变)达平衡时容器中气体的体积比V(I2):V(WI2)=______.

(4)在上述(1)平衡状态下,同时增加I2(g)和WI2(g)各0.02mol(其他条件不变),化学平衡向______(填“正反应”或“逆反应”)方向移动,判断的依据是______.

题型:选择题

下列关于特许经营的说法错误的是( )。

A.特许经营制是政府为管理、规范某些特殊经营活动而设立的一种制度

B.特许经营权是根据特许经营制度授予某些经济实体的一种经营权利

C.特许经营权由政府控制,政府可根据需要将特许经营权在一定期限内授予经营者

D.直接关系公共利益的特定行业不能通过经特定程序许可而获得市场准 * *

题型:选择题

采用膨胀螺栓生根时,螺栓固定后头部偏斜值不大于( )mm。

A.1
B.2
C.3
D.4

题型:选择题

集体协商机制主要包含的两项基本制度是()

A.集体协商制度(也称平等协商制度),集体合同制度

B.集体协商制度(也称平等协商制度),劳动合同制度

C.集体合同制度,劳动合同制度

D.劳动合同制度,工会协商制度

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