矿物的解理程度是如何划分的?它与断口之间的关系是什么?

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问题:

矿物的解理程度是如何划分的?它与断口之间的关系是什么?

考点:地球科学油田开发地质学油田开发地质学题库
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阅读下列材料:

“人固有一死,或重于泰山,或轻于鸿毛”。

请回答:

(1)这是谁说的话?

________________________________________________________

(2)作者写过什么书?大概内容是什么?

________________________________________________________________________

(3)这部著名史书在我国文学史上地位如何?

________________________________________________________________________

题型:问答题 简答题

关于DNA加合物的说法,错误的是()。

A.遗传毒性致癌机制主要与DNA发生作用,其结果是DNA加合物的形成

B.DNA加合物形成一定导致肿瘤

C.化学致癌物诱导生成DNA加合物的数量与致癌性有密切关系

D.DNA加合物可作为人类接触环境致癌物的标志

E.加合物在DNA链上的位置和加合物的性质决定了肿瘤是否发生

题型:问答题 简答题

阅读理解。

     Honesty comes in many forms. First there's self-honesty. Is what people see the real article or do you

appear through smoke and mirrors? I find that if I try to be something I'm not. I feel unsure of myself and

take out a part from my PBA (personal bank account). I love how singer Judy Garland put it. "Always be

a first-class version(版本) of yourself, instead of a second-class version of somebody else."

     Then there's honesty in our actions. Are you honest at school, with your parents, and with your boss?

If you've ever been dishonest, I think we all have, try being honest, and notice how whole it makes you

feel. Remember, you can't do wrong and feel right. This story by Jeff is a good example of that:

     In my second year of study, there were three kids in my math class who didn't do well. I was really good

at it. I would charge them three dollars for each test that I helped them pass. I'd write on a little piece of

paper all the right answers, and hand them off.

     At first I felt like I was making money, kind of a nice job. I wasn't thinking about how it could hurt all

of us. After a while I realized I shouldn't do that anymore, because I wasn't really helping them. They weren't

learning anything, and it would only get harder down the road. Cheating certainly wasn't helping me.

     It takes courage to be honest when people all around you are getting away with cheating on tests, lying

to their parents, and stealing at work. But, remember, every act of honesty is a deposit (储蓄) into your PBA

and will build strength.

1. The underlined part "appear through smoke and mirrors" in the first paragraph means "_____".

A. to be honest

B. to be unreal

C. to become clear

D. to come from an imagined world

2. Which of the following can best explain Judy Garland's words?

A. Be your true self rather than follow others.

B. Don't copy others or you can't be the first class.

C. Make efforts to be the first instead of the second.

D. Don't learn from others unless they're excellent.

3. What does the author expect to show by Jeff's story?

A. Honesty the author expect to show by Jeff's story?

B. A bad thing can be turned into a good one.

C. Helping others cheat can do good to nobody.

D. One should realize the wrong in his bad deeds.

4. In the last paragraph the author mainly wants to express _____.

A. one must be brave to be honest

B. it's difficult to be honest when others are not

C. one should be honest when making a deposit

D. honesty in one's actions can help him in the future

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搅拌机作业中,当料斗升起时,严禁任何人在料斗下停留或通过。

题型:问答题 简答题

机油泵主动轴孔磨损超过()时,可用修理尺寸法加以修理。

A.O.05mm

B.0.02mm

C.O.15mm

D.0.25mm

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