对于通风管道的管件采取的减小局部阻力措施有()。A.合理地采用曲率半径R  B.减少

题型:多项选择题

问题:

对于通风管道的管件采取的减小局部阻力措施有()。

A.合理地采用曲率半径R 

B.减少管件个数 

C.采用一定长度的渐缩管或渐扩管 

D.管件加大直径 

E.采用截面较大的通风弯管需安装形式合理的导流片

考点:机电工程机电工程题库
题型:多项选择题

数据导出的时候,如果是文本形式,则分隔符是()号。

A.,

B.”

C.:

D.-

题型:多项选择题

应用α-肾上腺能受体(α-AR)阻滞剂已成为前列腺增生治疗的最常用的一线药物。关于α-AR的类型和分布,以下正确的是()

A.α1A-AR亚型主要位于前列腺内

B.α1B-AR亚型主要位于前列腺内

C.α1D-AR亚型主要存在于血管和脾脏

D.α1D-AR亚型主要存在于膀胱逼尿肌,在血管等部位分布较少

E.α1L-AR亚型主要存在于膀胱逼尿肌

题型:多项选择题

治疗肾盂肾炎湿热下注,应首选

A.知柏地黄汤
B.猪苓汤
C.程氏萆薜分清饮
D.八正散
E.真武汤

题型:多项选择题

The round-the-clock availability that cell phones have brought to people’s lives may be taking a toll on family life, a new study suggests. The study, which followed more than 1300 adults over 2 years, found that those who consistently used a mobile phone through out the study period were more likely to report negative “spillover” between work and home life—and, in turn, less satisfaction with their family life.

Spillover(影响,后果) actually means that the line between work and home began to become unclear. Work life may invade home life—when a parent is taking job-related calls at home, for instance—or family issues may start to take up work time. For example, a child may call Mom at work, telling her “the microwave exploded”, explained Noelle Chesley, an assistant professor of society at the University of Wisconsin Milwaukee and the author of the study. The problem with cell phones seems to be they are allowing for ever more spillover between work and home.

This may be especially true for working women, the study found. Among men, consistent use of mobile phones seemed not to allow more work issues to creep(潜入) into family time. But for women,  the spillover tended to go in both directions—being “connected” means that work cuts into home time, and family issues come into work life.

Cell phones seem to be opening more lines for stressful exchange among family members. But there may be ways to control the spillover, according to Chesley. Employers, she said, should look at their policies on contacting employees after working hours to make sure their expectations are “reasonable”. For their part, employees can decide that cell phones go off during family time,  Chesley said.

小题1:Which of the following can replace the underlined phrase “taking a toll on” in Paragraph l?

A.Explaining

B.Protecting

C.Extending

D.Damaging小题2:The example “the microwave exploded” in Paragraph 2 is used to              .

A.show the microwave is of poor quality

B.indicate how dependent the child is

C.indicate family issues affect work hours

D.show work time creeps into family life小题3:What is the main idea of this passage?

A.Cell phones offer 24-hour availability.

B.Cell phones get life and work mixed.

C.Women don’t use cell phones in an effective way.

D.Men are better at dealing with family problems.小题4:What is the author’s attitude towards round-the-clock availability of the cell phone?

A.Curious

B.Positive

C.Subjective

D.Objective

题型:多项选择题

炔诺酮()

A.乙炔基

B.甲酮基

C.C17-α-醇酮基

D.酚羟基

E.C17上β羟基上形成有丙酸酯

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