合流制管渠系统有何特点？_爱下问搜题

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问题问答题简答题

合流制管渠系统有何特点？

答案

参考答案：

1）结构简单，管渠总长度短；

2）与分流制相比，截流干管管径和埋深大，泵站和污水处理厂规模大；

3）雨天径流时，部分生活污水也溢流到水体，造成一定程度的污染；

4）晴天时，管渠内流量小，流速低，易淤积。

单项选择题

下列哪项是正常产褥的表现（）

A.产后第一天，宫底平脐

B.产后12小时体温可超过38％

C.产后10天为血性恶露

D.产后脉搏一般偏快

E.产褥早期白细胞即恢复正常

完形填空

There was a small boy living on a farm which seemed like so far away from everywhere. He needed to get up before sunrise every morning to start his everyday jobs and go out again later in the evening to do the same 　36　.
During sunrise he would 　37　a break and climb up the fence so that he could see the house with golden windows 　38　 the distance. He thought 　39　 great it would be to live there and his 　40　 would wander to imagine the modern equipment and electric devices that might 　41　 in the house. “If they could 　42　 the golden windows, they 　43　 have other nice things.” He then 　44　 himself, “Some day I will go there and see that wonderful place.”
Then one morning his father told him to stay at home and he would do the everyday jobs. 　45　 that this was his chance, he packed a sandwich and　46　 the field towards the house with golden windows.
He walked and walked. As the afternoon went on, he began to realize how he misjudged the long 　47　 and something else was very wrong. As he 　48　 the house, he saw no golden windows but instead a place in bad 　49　 of a painting surrounded by a broken-down fence. He went to the tattered (破烂的) door and 　50　. A small boy very 　51　 his age opened the door.
He asked him if he had seen the house with 　52　 windows. The boy said “Sure, I know” and 　53　 him to sit on the porch (门廊). As he sat there, he looked back from 　54　 he just came; the sunset 　55　 the windows of his house to gold there.

A．satisfied with

B．familiar with