矿山防尘措施八字方针中“护”是指()。 A.通风 B.湿式作业 C.密闭尘源 D.个

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问题:

矿山防尘措施八字方针中“护”是指()。

A.通风

B.湿式作业

C.密闭尘源

D.个体防护

考点:非煤矿山考试非煤矿山(地下矿)考试非煤矿山(地下矿)考试题库
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用5、3、7三个数可以组成( )个不同的三位数。
A.4B.5C.6
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周围神经系统的有髓神经纤维,一个施万细胞包裹一条轴突。

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阅读理解

     Are you ready to experience life as it may be in the future?Here are some interesting points to learn

about the future.

     Artificial intelligence:Many years down the road humans  might not even be recognizable because

artificial intelligence  (also known as AI) will have combined with our natural  states.Scientists are learning more about the human brain every day, and they are working toward making smart robots we can use to

help us.Some people say that nanobots-supertiny robots-may help us in invisible (看不见的) ways in the

future.They say they will be everywhere, outnumbering humans many times over!

      Nanotechnology:This is the ability to make tools and  helpful robots that are a billion times smaller

than we can see.Scientists have already made many nanosized tools that they can use.When this science

is improved and becomes more common and affordable, it will change everything.

      Braintocomputer communication:Nanocomputers will probably be linked to your thoughts, voice and

emotions, and be able to react to your needs.In the future people will rely on wireless technology and

everyone and everything  will be linked.Your brain will be able to receive information  from computers

to fill your head with knowledge or teach you new things.When you want to learn a new skateboarding

trick or dance move, nanocomputers will send the information to your brain and allow your body to use

the tips and apply them-no studying involved!

      Virtual reality:You already love virtualreality games-they make imaginary worlds in which you can

play. But what if it allows you to have a cool new school?Virtual worlds are being created so

computergenerated environments will allow you to learn school lessons with your teacher and your

friends seemingly present without actually being there.Technology will give you a 3D image and link it to

your brain in a way that makes you actually feel as if you were there.

1. The passage mainly introduces________.

A. the use of robots in the future    

B. the importance of science and technology

C. some technology in the future    

D. some ways to improve communication

2. What can we conclude from the second paragraph?

A. The number of robots is greater than the number of humans.

B. AI will bring about great changes to people's lives.

C. Nanobots will take the place of humans in some years.

D. Scientists won't stop learning about the human brain until AI is widely used.

3. The fourth paragraph introduces a new way of________.

A. delivering and getting information    

B. school education

C. exercising                       

D. entertaining

4. We can most probably read this passage in________.

A. a government report

B. a scientific magazine

C. a news report  

D. a research paper

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关于细胞周期特异性化疗药物,描述错误的是()

A.作用特点是给药时机依赖性

B.甲氨蝶呤是此类药物

C.当药物达到一定剂量时,疗效不再增加

D.羟喜树碱是此类药物

E.丝裂霉素是此类药物

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根据《电力行业紧急救护技术规范》DL/T692-2008规定,救护触电伤员切除电源时,有时会同时使照明失电,因此应考虑事故照明、应急灯等临时照明,新的照明要符合使用场所的()要求,但不能因此延误切除电源和进行急救。

A.防火、防触电

B.防爆、防静电

C.防触电、防潮

D.防火、防爆

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