计算灌溉制度的原理

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问题:

计算灌溉制度的原理

考点:农田水利学农田水利学题库
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连线题

A.抗原 a.人体抵抗抗原侵入的功能强,从而引起病态反应

B.性状b.指昆虫的发育经过卵、幼虫、蛹、成虫四个阶段

C.完全变态 c.生物的形态结构特征、生理特性和特定的行为方式

D.过敏反应 d.病原体和异物

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软件是程序、数据和______的集合。

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阅读理解。

     There're five people at our table, including myself. I've already learnt a great deal about them in the

short time we've been at sea, although we rarely meet except at meal times.

     First of all, there's Dr Stone. He's a man of about sixty five, with gray hair and a friendly face. He

gave up his work a short while ago and is now traveling round the world before he retires to some quiet

country village. As a young man, he served for many years as a doctor in the Army and visited many

countries. He's told us a lot about the city to which we are going.

     Then there's "Grandmother". I call her that because her name escapes me. In spite of being a

grandmother, she looks rather young, not more than fifty, She's on her way to visit a daughter who went

to Australia some years ago. Naturally she is very excited at the thought of seeing her again, and her

three grandchildren, whom she has never seen.

     Then there's a man I don't care for very much, an engineer by the name of Barlow. He has been on

leave in England and is now returning to his work in Singapore.

     The other person who sits at our table is Mrs. Hunt. I've found out hardly anything about her. She's

extremely quiet and rarely talks, except to consult (咨询) the doctor about children's various illness.

She's on her way to join her husband in India.

1. What can we know about Mr. Stone?

A. He is a doctor in the Army now.

B. He is going to give up his work.

C. He knows a lot about the city the author is going to.

D. He has been retired for many years.

2. The writer calls the second person "Grandmother" because_______.

A. she looks old

B. She has three daughters

C. he respects her

D. he can't think of her name

3. Which of the following is TRUE?

A. Dr Stone lives in a quiet village now.

B. "Grandmother" is an Australian.

C. Barlow works in Singapore

D. Mrs Hunt is a woman of many words.

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关于表面粗糙度符号、代号在图样上的标注,下列说法中正确的是()。

A.符号的尖端必须由材料内指向表面

B.代号中数字的注写方向必须与尺寸数字方向一致

C.表面粗糙度符号或代号在图样上一般注在可见轮廓线、尺寸界线、引出线或它们的延长线上

D.当零件所有表面具有相同的表面粗糙度要求时,其代号可在图样的右上角统一标注

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ECDIS有类似“黑匣子”的功能,能够记录过去12小时以不超过1分钟的间隔记录一下数据:()

A.确保记录本船经过的航迹:时间、船位、首向和航速

B.确保记录使用过的正式数据:ENC信息源、版本、日期、单元和更新史

C.以上都对

D.以上都不对

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