下列各项的叙述中都包含两个数值,前一数值大于后一数值的是 A.H2S中的分子间作

题型:选择题

问题:

下列各项的叙述中都包含两个数值,前一数值大于后一数值的是

A.H2S中的分子间作用力和H2O中的分子间作用力

B.NaCl晶体中与一个Cl-紧邻的Na+数和CsCl晶体中与一个Cl-紧邻的Cs+

C.晶体硅中Si—Si键的键能和金刚石中C—C键的键能

D.氨分子中N—H键的极性和甲烷分子中C—H键的极性

考点:化学键与化学反应中能量变化的关系
题型:选择题

支气管肺组织的感染和阻塞所致的支气管扩张症的最常见原因是()。

A.肺结核

B.支气管曲菌感染

C.婴幼儿麻疹、百日咳、支气管肺炎等感染

D.肿瘤、异物吸入引起的支气管阻塞

E.有害气体的吸入损害气道

题型:选择题

(A)

Arthur Miller (1915-2005) is universally recognized as one of the greatest dramatists of the 20th century. Miller’s father had moved to the USA from Austria-Hungary, drawn like so many other by the "Great American Dream." However, he experienced severe financial hardship when his family business was ruined in the Great Depression of the early 1930s.

Miller’s most famous play, Death of a Salesman, is a powerful attack on the American system with its aggressive way of doing business and its insistence on money and social status as indicators of worth. In Willy Lowman, the hero of the play, we see a man who has got into double with his worth. Willy is "burnt out" and in the cruel world of business there is no room for sentiment: if he can’t do the work, then he is no good to-his employer, the Wagner Company, and he must go. Willy is painfully aware of this, and at loss as to what to do with his lack of success. He refuses to face the fact that he has failed and kills himself in the end.

When it was first staged in 1949, the play was greeted with enthusiastic reviews, and it won the Tony Award for Best Play, the New York Drama Critics’ Circle Award, and the Pulitzer Prize for Drama. It was the first play to win all three of these major awards.

Miller died of hear failure at his home in Roxbury, Connecticut, on the evening of February 10, 2005, the 56th anniversary of the first performance of Death of a Salesman on Broadway.

What can we learn about Willy Lowman()

A. He treats his employer badly.

B. He runs the Wagner Company.

C. He is a victim of the American system.

D. He is regarded as a hero by his colleagues.

题型:选择题

按照国务院有关规定批准开工报告的建筑工程,如果因故不能按期开工或者中止施工的,应当及时向批准机关报告情况。如果因故不能按期开工超过()的,应当重新办理开工报告的批准手续。

A.1个月

B.3个月

C.6个月

D.12个月

题型:选择题

规定社会工作者“应该做什么”和“不应该做什么”.的是( )。

A.社会工作理想

B.社会工作信念

C.社会工作价值观

D.社会工作专业守则

E.社会工作伦理

题型:选择题

简述电动机不能启动时,应检查哪些电路设备?

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