不受植物性神经支配的器官是（ ） A．胃 B．血管 C．心脏 D．肱二头肌

数轴上表示互为相反数的两个点之间的距离为7，则这两数为______．

阅读理解。

     Have you ever seen people building houses? To build a house, you need workers. They use their

hands, tools (工具) and machines to put things together. Building the ISS (国际太空站) is the same.

The difference is that the workers are astronauts. They walk in space and use robots' arms and hands to

do their work.

     In the space station, astronauts are comfortable. The temperature there is about 21℃. But outside the

station, it can be too hot or cold for people. In the sunlight, it's about 120℃. In the shadow (阴暗处) of

the station, it's about -85℃. So when astronauts walk in space, they have to wear heavy clothes —

spacesuits.

     Spacesuits also keep astronauts safe from flying rubbish (垃圾) in space. Each time people go into

space, they leave rubbish there. So astronauts should be careful because there's a lot of rubbish, some

rubbish goes many times as fast as a plane!

     Space walking is not easy, and it can be dangerous. So getting ready for it takes a lot of time to learn.

Astronauts will need to do 160 space walks to finish their work in the ISS. That will take about 1,900

man-hour of work.

1. What's the temperature in the space station?

A. 21℃

B. 120℃

C. -85℃

D. -21℃

2. The astronauts work in space with _____.

A. scientists' hands

B. tools in their hands

C. robots' arms and hands

D. workers' hands

3. Which of following is TRUE according to the passage?

A. Space walking is very comfortable

B. Space walking is difficult

C. Astronauts needn't wear spacesuits when walking in space

D. Space walking is very safe

4. What does the underlined word "spacesuit" mean in Chinese?

A. 太空服

B. 防暴服

C. 羽绒服

D. 雨衣

5. Which of following is not TRUE according to the passage?

A. Spacesuits can keep astronauts warm

B. Spacesuits can keep astronauts safe

C. Flying rubbish in space goes very slowly

D. Outside the station, it can be too cold or hot for people

机泵盘车的目的不是（）

A、防止轴弯曲变形

B、防止转子卡阻

C、防止电机烧坏

D、冬季防止转子冻凝

在HSDPA中的关键技术有（）、（）、（）

质量监督的效果存在于各个不同的相互制约，互相关联，纵横交错的方面，需要进行综合分析，以获得最佳效果，就是（）。

A、质量监督的综合性

B、质量监督的广泛性

C、质量监督的实效性

D、质量监督技术效果