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问题 多项选择题

热水热力网支干线的设计中，正确的设计应是下列选项的哪几个？（）

A、热力网支干线管径应按经济比摩阻确定

B、热力网支干线管径应按允许压力降确定

C、DN400以上的管道的允许比摩阻不应大于300Pa/m

D、DN400以下的管道的管内流速不应小于3.5m/s

答案

参考答案：B, C

选择题

下列划线字的注音全都正确的一项是（3分）

A．稽首（qǐ）聒噪（ɡuō）叱咤风云（zhà）

B．蝉蜕（tuō）藩篱（fān）中流砥柱 (dǐ)

C．骈进（pián）提防（tí）相形见绌（chù）

D．芳馨（xīn）喑哑 (yīn)锲而不舍(qì)
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阅读理解

根据短文内容，完成下面句子。

You and Me is the theme song(主题歌) of the 2008 Beijing Summer Olympics. Liu Huan and Sarah Brightman sang the song in the Opening Ceremony(开幕式) of the 2008 Beijing Olympics. Sarah is a famous British singer. The song lasts four minutes and ten seconds. It is a very simple song, but it is also a great challenge(挑战) to me. “The easiest is the most difficult,” said Liu Huan. “I couldn’t believe my eyes when I got the invitation to sing the song. It is a great honor(荣誉) for me and I am very lucky,” said Sarah Brightman.

You and me is quite different from all the other theme songs of the Olympic Games in the past. It is slow and full of love, care and friendship. And it sounds beautiful and keeps to the game’s theme of “One World, One Dream”. It shows that there’s no difference in language or race(种族). All the people in the world are just one big family.

小题1:The theme song for the 2008 Beijing Summer Olympics is __________.

小题2:Sarah Brightman thinks that it is ______ for her to sing the song.

小题3:The song lasts ________________________.

小题4:The song is            and it is quite different from the other Olympic songs.

小题5:The theme of the Olympic is “_________________________”.
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