构杆平面上出现的凹坑面积不得超过100cm2;深度不得超过()mm。A、10 B、2

题型:单项选择题

问题:

构杆平面上出现的凹坑面积不得超过100cm2;深度不得超过()mm。

A、10

B、20

C、30

D、40

考点:钳工技能考试高级综合维修钳工考试高级综合维修钳工考试题库
题型:单项选择题

阅读理解。

     Fashion isn't very environmentally-friendly because it makes people buy things they don't need, just

because they're new. We want to take care of the environment, we don't want to pollute the air and we

don't want to waste energy and resources. But we also want to be fashiona-ble. How can we buy fashionable

clothes and protect the environment?

     Old styles are fashionable again, so one way is to buy second-hand clothes - recycled clothes. Another

way is to buy fair trade clothes. These clothes are either recycled or made in a way that protects the

environment. They also protect the people who make the clothes.

     Surprisingly, white cotton is one of the least environmentally-friendly crops of all. To protect the cotton,

the growers use chemicals that pollute water, make farm workers ill and kill wildlife. New materials, such as

hemp and bamboo, grow quickly and are more environmentally-friendly. These materials are very soft, and

look fantastic. The best materials are coloured using natural dyes, made from plants.

     Environmentally-friendly clothes are practical but until now they were often dull. Now fashion-designers

are working with these materials and the clothes are beautiful as well. So now we can buy fashionable clothes

that are also environmentally-friendly.

1. Why do people often buy things they don't need? Because ________.

A. new things can be more comfortable

B. everyone wants to be fashionable

C. people are richer than before now

D. people care about the environment

2. What's the topic for paragraph 2?

A. Recycled fashion.

B. The problem with fashion.

C. Fashion doesn't have to pollute.

D. New materials.

3. Which of the following is more environmentally-friendly?

A. Materials soft and looking fantastic.

B. Any materials coloured using natural dyes.

C. Hemp and bamboo.

D. White cotton.

4. Why are environmentally-friendly clothes more fashionable now? Because ________.

A. people pay more attention to our environment

B. environmentally-friendly clothes are practical

C. all old styles become fashionable again

D. fashion-designers are working to make them beautiful

5. What is the best title for the passage?

A. Cotton or Hemp and Bamboo?

B. Environmentally-friendly Clothes

C. Old Style, New Fashion Again

D. Fashion and the Environment

题型:单项选择题

图中等高距是(  )

A.50米

B.100米

C.150米

D.200米

题型:单项选择题

缺铁性贫血的主要病变脏腑在

A.脾胃心肝

B.心肝脾肾

C.肺脾肝肾

D.心肝脾肺

E.心脾肺肾

题型:单项选择题

作业者在夜间的生理机能水平只有白班工作时的70%,以致工作效率降低,且影响作业者健康。因此应尽量( )。

A.实行轮班制度

B.避免轮班制度

C.缩短工作时间

D.提高工作率

题型:单项选择题

如果要选定一个窗口中不连续的多个文件和文件夹,除了要用鼠标单击这些文件或文件夹之外,为配合操作还要同时按住()键

A.Shift

B.Ctrl

C.Alt

D.Backspace

更多题库