一级沉淀池总悬浮物的去除率为( )。 A．70%～80% B．60%～70%_爱下问搜题

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问题单项选择题

一级沉淀池总悬浮物的去除率为( )。

A．70%～80%
B．60%～70%
C．50%～60%
D．40%～50%

答案

参考答案：C

完形填空

Michael Greenberg is a very popular New Yorker. He is not famous in sports or the arts, But people in the streets    him, especially those who are     .
For those people, he is "Gloves" Greenberg. How did he get that   ?He looks like any other businessman, wearing a suit and carrying a briefcase (公文箱). But he's _____. His briefcase always has some gloves。
In winter, Mr.Greenberg does not  like other New Yorkers, who look at the sidewalk and  the street. He looks around at    .He stops when he     someone with no gloves. He gives them a pair and then he _____ ,looking for more people with cold     .
On winter days, Mr.Greenberg     gloves. During the rest of the year, he    gloves. People who have heard about him      him gloves, and he has many in his apartment.
Mr. Greenberg    doing this 21 years ago. Now, many poor New Yorkers know him and   his behavior. But people who don't know him are sometimes    him. They don't realize that he just wants to make them .
It runs in the   .Michael's father always helped the poor as he believed it made everyone happier. Michael Greenberg feels the   .A pair of gloves may be a   thing, but it can make a big difference in winter.

B．drive along

C．street numbers

D．traffic lights

D．turns around

A．searches for

B．satisfied with

D．surprised by

C．neighborhood

单项选择题

判断有无胸腔积液，灵敏度高、定位准确、简便实用的检查是

A．超声检查
B．胸片检查
C．胸部CT检查
D．胸部磁共振检查