试述决定作物布局的因素及方法步骤。

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问题:

试述决定作物布局的因素及方法步骤。

考点:农学作物栽培学作物栽培学题库
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数据流图的类型有 【3】 和事务型。

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下列措施属于在传播过程中阻断噪声的是(   )

A.摩托车安装消声器

B.纺织工人戴防噪声耳罩

C.城市道路旁安装隔音板

D.放鞭炮时捂耳朵

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D

Wrting artieles about films for The Front Page was my first proper job. Before then I had done bits of reviewing --- novels for other newspapers, films for a magazine and anything I was asked to do for the radio.That was how I met Tom Seaton, the first arts editor of The Front Page, who had also written for television.He hired me, but Tom was not primarily a journalist, or he would certainly have been more careful in choosing his staff.

At first, his idea was that a team of critics should take care of the art forms that didn’t require specialized knowledge: books, TV, theatre, film and radio.There would be a weekly lunch at which we would make our choices from the artistic material that Tom had decided we should cover, though there would also be guests to make the atmosphere sociable.

It all felt like a bit of dream at that time: a new newspaper and I was one of the team.It seemed so unlikely that a paper could be introduced into a crowded market.It seemed just as likely that a millionaire wanted to help me personally, and was pretending to employ me.Such was my lack of self-confidence.

Tom’s original scheme for a team of critics for the arts never took off.It was a good idea, but we didn’t get together as planned and so everything was done by phone.It turned out, too, that the general public out there preferred to associate a reviewer with a single subject area, and so I chose film.Without Tom’s initial push, though, we would hardly have come up with the present arrangement, by which I write an extended weekly piece, usually on one film.

The space I am given allows me to broaden my argument --- or forces me, in an uninteresting week, to make something out of nothing.But what is my role in the public arena? I assume that people choose what films to go to on the basis of the stars, the publicity or the director.So if a film review isn’t really a consumer guide, what is it? I certainly don’t feel I have a responsibility to be ‘right’ about a movie.Nor do I think there should be a certain number of ‘great’ and ‘bad’ films each year.All I have to do is put forward an argument.I’m not a judge, and nor would I want to be.

67.What do we learn about Tom Seaton from the first paragraph?

A.He encouraged Mark to become a writer.

B.He had worked in various areas of the media.

C.He met Mark when working for television.

D.He prefers to employ people that he knows.

68.The weekly lunches were planned in order to       .

A.help the writers get to know each other

B.provide an informal information session

C.distribute the work that had to be done

D.entertain important visitors from the arts

69.What does the author mean when he says that Tom’s plan ‘never took off’ in Paragraph 4?

A.It was unpopular.    

B.It wasted too much time.

C.It wasn’t planned properly.

D.It wasn’t put into practice.

70.Which of the following best describes what Mark says about his work?

A.His success varies from year to year.

B.He prefers to write about films he likes.

C.He can freely express his opinion.

D.He writes according to accepted rules.

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上述各项中屑于医生违背不伤害原则的是()

A、医生检查病人时,由于消毒观念不强,造成交叉感染

B、医生满足病人的一切保密要求

C、妊娠危及母亲的生命时,医生给予引产

D、医生对病人的呼叫或提问给予应答

E、医生的行为使某个病人受益,但却损害了别的病人的利益

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下列物质加入水中显著放热的是(  )。

A.生石灰

B.固体NaCl

C.无水乙醇

D.固体NH4NO3

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