对于操作温度在()的容器,其设计温度不得高于壳体金属可能达到的最低金属温度。A.≤-

题型:单项选择题

问题:

对于操作温度在()的容器,其设计温度不得高于壳体金属可能达到的最低金属温度。

A.≤-20℃

B.<-20℃

C.<0℃

D.≥0℃

考点:压力容器考试压力容器上机考试压力容器上机考试题库
题型:单项选择题

下列正确的命题是:                                     (    )

A.三点确定一个平面

B.两组对边分别平行的四边形是平行四边形

C.两组对边分别相等的四边形是平行四边形

D.没有交点的两条直线是平行直线

题型:单项选择题

阅读理解。

     If there is one thing I'm sure about,it is that a hundred years later we will still be reading newspapers.

It is not that newspapers are a necessity. Even now some people get most of their news from television or

radio. Many buy a paper only on Saturdays or Sundays. But for most people,reading a newspaper has

become a habit passed down from generation to generation.

     The nature(特征) of what is news may change. What basically makes news is what affects our

lives-the big political stories,the coverage(报道) of the wars,earthquakes and other disasters,will

continue much the same. I think there will be more coverage of scientific research,though,the research

happening in areas that may directly affect our lives,like genetic(基因) engineering. In the future,I think

there will be more coverage of scientific explanations of why we feel as we do-as we develop a better

understanding of how the brain operates and what our feelings really are.

     It's quite possible that in the next century,newspapers will be transmitted (传输)electronically from

the Fleet Street and printed out in our own home. In fact,I'm pretty sure how it will happen in the future.

You will probably be able to choose from a menu and make up your own newspaper by picking out the

things you want to read-say,sports,international news,ect.

     I think people have got it wrong when they talk about competition between the different media. They

actually feed-off(依靠) each other. Some people once foresaw(预见) that television would kill off

newspapers,but that hasn't happened. What is read on the printed page lasts longer than pictures flashed

up on a screen or sounds lost in the air. And as for the Internet,it's never really pleasant to read something

just on a screen.

1. What is the best title for the passage?

A. The Best Way to Get News        

B. The Changes of Media

C. Make Your Own Newspaper        

D. The Future of Newspaper

2. In the writer's opinion,in the future________.

A. more big political affairs,wars and disasters will make news

B. newspapers will not be printed in publishing houses any longer

C. newspapers will cover more scientific research

D. more and more people will read newspapers

3. What will probably be on in the newspaper made by yourself?

A. Sports and international news.      

B. A menu of important news.

C. The most important news.          

D. What you are interested in.

题型:单项选择题

重要部位、专门工艺的施工作业,施工方必须在该项作业开始前( )h,书面通知现场监理机构到位旁站,见证施工作业过程。

A.12
B.24
C.36
D.48

题型:单项选择题

党的十九大报告指出,中国将继续发挥负责任大国作用,积极参与全球治理体系改革和建设,不断贡献()和力量。

A.中国智慧

B.中国方案

C.中国模式

题型:单项选择题

材料一:美国是中国的第二大贸易伙伴,中国则是美国的第四大贸易伙伴。据中国海关统计,1979年至2001年,中美贸易额累计近6000亿美元。美国对华投资项目累计超过3.3万个,美方实际投入350亿美元,全美500强企业已有300多家在中国落户。中国入世后,根据中美关于中国加入世贸组织的双边协议,美国将结束对华正常贸易关系地位的年度审议,确立对华永久性正常贸易关系地位。材料二:2002年3月20日,美国限制钢铁进口的“201”条款正式启动。按其规定美国将对钢铁等进口的主要钢铁品种实施为期3年的关税配额限制或加征高达8%至30%不等的关税,这将对全球钢铁业造成严重影响。我国的利益也牵涉其中。专家和业内人士认为,这不仅影响我国对美的钢铁出口,而且由此引发的对我国钢材市场的潜在冲击更是不可低估。中国将为此打响入世第一战。材料三:近十几年来,中美高层进行了史无前例的、频繁的交流。1997年和1998年,中国国家 * * 江 * * 和美国总统克林顿成功地进行了互访;1999年朱 * * * * 应邀赴美访问;2001年10月APEC领导人非正式会议期间,江 * * 与布什总统在上海举行双边会谈。2002年2月,布什总统应邀正式访华。两国高层的互访和会谈促进了两国的合作。

谈谈你对材料三的认识。

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