空气采样器一般用()测量流量 A.孔板流量计 B.文丘里流量计 C.皮托管 D.转子

题型:单项选择题

问题:

空气采样器一般用()测量流量

A.孔板流量计

B.文丘里流量计

C.皮托管

D.转子流量计

考点:环保气象安全技能考试环境保护监察员(中级)环境保护监察员(中级)题库
题型:单项选择题

在-1和8之间插入两个数a,b,使这四个数成等差数列,则(  )

A.a=2,b=5

B.a=-2,b=5

C.a=2,b=-5

D.a=-2,b=-5

题型:单项选择题

淤胆型肝炎的主要表现为()

A.皮肤瘙痒

B.粪便颜色变浅

C.消化道症状减轻

D.血胆红素明显升高,以间接胆红素为主

E.ALT中度升高

题型:单项选择题

下列各句中意思明确,没有语病的一项是

A.现在刮着一股急功近利、浮躁之风,甘于寂寞,踏踏实实做学问的不多,他则是其中一个代表。

B.问题的严重性还在于种种不爱惜人民币的错误做法以及随意将人民币放大后销售的违法行为,尚未引起社会的广泛关注。

C.作为中学生,无论生理上或心理上,都处于幼稚向成熟的过渡时期,极易受到环境和教育的影响。

D.经过整顿,场内外秩序有明显好转,观众出入场不再互相拥挤。

题型:单项选择题

性温具有燥湿与利尿功效的补气药是()。

A.人参

B.白术

C.黄芪

D.车前子

E.党参

题型:单项选择题

短文填空

     We are all called upon to make a speech at some point in life, but most of us don't do a very good

job.1________.

     So, you have to give a speech-and you are terrified.You get nervous, you forget what you want to

say, you stumble (结结巴巴) over words, you talk too long, and you bore your audience.Later you

think, "Thank Goodness, it's over.I'm just not good at public speaking.I hope I never have to do that

again."

     Cheer up!2.________.Here are some simple steps to take the pain out of speechmaking.Ask yourself

the purpose of your speech.What is the occasion?Why are you speaking?Then, gather as many facts as

you can on your subject.Spend plenty of your time doing your research.Then spend plenty of your time

organizing your material so that your speech is clear and easy to follow.Use as many examples as

possible, and use pictures, charts, and graphs if they help you make your points more clearly.

3.________.Don't talk over their heads, and don't talk down to them.Treat your audience with respect.

They will appreciate your thoughtfulness.

     Just remember:Be prepared.Know your subject, your audience, and the occasion.Be brief.

4.________.And be yourself.Let your personality come through so that you make persontoperson

contact with your audience.

     If you follow these simple steps, you will see that you don't have to be afraid of public speaking.In

fact, you may find the experience so enjoyable that you volunteer to make more speeches!You're not

convinced yet?5.________.

A. It doesn't have to be that bad.

B. Take several deep breaths after your speech.

C. This article gives some advice on how to give a good speech.

D. Say what you have to say and then stop.

E. Don't say what you aren't familiar with.

F. Never forget your audience.

G. Give it a try and see what happens.

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