清净罐装满后对60升/分,气流的阻力应不超过()毫米汞柱。A、15; B、10; C

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问题:

清净罐装满后对60升/分,气流的阻力应不超过()毫米汞柱。

A、15;

B、10;

C、25;

D、20。

考点:煤气输送工考试煤气输送工初级煤气输送工初级题库
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其脉左右交会于头顶部的是()

A.督脉

B.足厥阴经

C.足少阴经

D.足太阳经

E.手太阳经

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小明读一本书,第一天读了这本书的
1
3
,第二天读了这本书的
1
2
,第三天读完剩下的10页.这本书共多少页?
题型:单项选择题

A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains the range of news from local crime to international politics, from sports to business to fashion to science, and the range of comment and special features (特定) as well, from editorial page to feature articles and interviews to criticism of books, art, theatre and music. A newspaper is even more remarkable for the way one reads it never completely, never straight through, but always by jumping from here to there, in and out glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next.
A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What brings this variety together in one place is its topicality (时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient (短暂的) value.
For all these reasons, no two people really read the same paper: what each person does is to put together out of the pages of that day’s paper, his own selection and sequence, his own news paper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.

According to the passage, the reason why no two people really read the same newspaper is that ______.

A. people scan for the news they are interested in
B. different people prefer different newspapers
C. people are rarely interested in the same kind of news
D. people have different views about what a good newspaper is

题型:单项选择题

1982年7月1日,代理市长熊清泉宣布了第三次人口普查结果,长沙城市人口是多少万?97万,107万,117万?127万?

题型:单项选择题

墨家学说中“提倡平等”的主张是()

A.兼爱

B.尚同

C.非乐

D.节用

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