相对高程是由（）起算的地面点高度。 A.大地水准面 B.任意水准_爱下问搜题

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问题单项选择题

相对高程是由（）起算的地面点高度。

A.大地水准面

B.任意水准面

C.水平面

D.竖直面

答案

参考答案：B

改错题

短文改错。
     此题要求改正所给短文中的错误。对标有题号的每一行做出判断：
     如有错误(每行只有一个错误)，则按下列情况改正：
     此行多一个词：把多余的词用斜线(＼)划掉，在该行右边横线上写出该词，并也用斜线划掉。
     此行缺一个词：在缺词处加一个漏字符号(八)，在该行右边横线上写出该加的词。
     此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
     注意：原行没有错的不要改。

My sister found a bird on the roadside. We named him
Jack and keep him for about three years. He would greet us
in the tree outside our bedroom, calling "Hello" as we lay in
bed in a morning. He also passed "Hello" to the cats when
they came into the room. We often played a trick on himself.
We'd throw a coin as far as possibly. Jack would fly away
and bring it back for us throw again. He would also catch
the food throwing to him from the other side of the room and
sing happily. But for the most wonderful thing about Jack
were his musical ability. Leaving him at home all day, we
would return at night to hear that he'd picked up from the
radio in the day.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7. _____
8. _____
9. _____
10. _____

单项选择题

《中国节水技术政策大纲》中提出，发展和推广村镇（）技术。

A.集中供水

B.分散供水

C.一户一家供水

D.十户统一供水