形成自然通风的必要条件是建筑物内外必须存在______。 A．热压_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

形成自然通风的必要条件是建筑物内外必须存在______。

A．热压
B．风压
C．热压和风压
D．风压或热压

答案

参考答案：D

解析：自然通风是指利用建筑物内外空气的密度差引起的热压或室外大气运动引起的风压来引进室外新鲜空气以达到通风换气作用的一种通风方式。

写作题

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作出判断：
如有错误(每行只有一个错误)，则按下列情况改正：
该行多一个词：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。
该行缺一个词：在缺词处加一个漏词符号(∧)，在该行右边横线上写出该加的词。
该行错一个词：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。

When I walked into the classroom, the teacher was handing
in the tests. I was feeling very nervous. I had not studied
at all at the weekend as I had thought it would be easy test.
I went through the test for many times but I could only answer
three out from the twenty questions. I did not want to fail
the exam. Then, I put my book under my desk, opening it
and started looking for the answer. The teacher wasn't
looking at me, but I copied something. Suddenly, I felt a hand
on my shoulder! The teacher caught me cheating. I don't
know what to say. Luckily, the teacher did not punish for
cheating but instead gave me the second chance.

1______
2______
3______
4______
5______
6______
7______
8______
9______
10______

判断题

李光耀被誉为新加坡的国父。