用化学符号表示: (1)钠元素______(2)三个磷原子______(3)氩气

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问题:

用化学符号表示:

(1)钠元素______(2)三个磷原子______(3)氩气______(4)氮气______

(5)两个氧分子______(6)2个钙离子______(7)-2价的硫元素______

考点:化学式的写法和意义化合价的写法和意义元素符号的意义及写法
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NEW YORK---One in five U.S. workers regularly attends after-work drinks with coworkers, where the most common mishaps range from badmouthing another worker to drinking too much, according to a study released on Tuesday.

Most workers attend so-called happy hours to bond with colleagues, although 15 percent go to hear the latest office gossip and 13 percent go because they feel necessary, said the survey conducted for CareerBuilder. com, an online job site. As to what happens when the after-work drinks flow, 16 percent reported bad-mouthing a colleague, 10 percent shared a secret about a colleague and 8 percent said they drank too much and acted unprofessionally. Five percent said they had shared a secret about the company, and 4 percent confessed to singing karaoke. While 21 percent of those who attended said happy hours were good for networking, 85 percent said attending had not helped them get closer to someone higher up or get a better position. An equal number of men and women said they attended happy hours with co-workers, with younger workers aged 25 to 34 most likely and workers over 55 least likely to attend. Overall, 21 percent of workers attend happy hours with co-workers and; of those nearly a quarter go at least once a month.

The survey was conducted online by Harris Interactive on behalf of CareerBuilder. com among 6,987 full-time employees between February 11 and March 13. Harris Interactive said the results had a sampling error of plus or minus 1.2 percentage points.

56. Harris Interactive made the survey to find out            .

A. how U.S. workers spend their after-work time        

B. what U.S. workers do at after-work drinks

C. the relationships between U.S. workers        

D. who are most likely to attend after-work drinks

57.         of workers who attend after-work drinks speak ill of a colleague. 

A. 4 percent       B. 8 percent     C. 16 percent     D. 10 percent

58. According to the passage, most of those surveyed believed attending after-work drinks             .

A.benefited them a lot                B. could provide information  

C.only made them relaxed            D. was of no help to them

59. We can learn from the text that                 .

A. workers over 55 don’t like to attend happy hours at all

B. about 75% of  workers go more than once a month  

C. 10.5% of male workers attend happy hours with co-workers

D. about 700 workers surveyed shared a secret about a co-worker

60. After the survey, it can be inferred that                    .

A. all the workers oppose after-work drinks

B. the workers may change their attitudes towards after-work drinks  

C. all the workers support after-work drinks

D. all the workers are suggested going to attend after-work drinks

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列车按施工特定行车办法办理时,准许车站不向司机递交书面凭证,列车凭()通过车站。

A、通过信号

B、通过手信号

C、绿色灯光

D、引导信号

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女性,28岁,患风湿性心脏病二尖瓣狭窄并关闭不全,因慢性心力衰竭每日服用地高辛0.125mg,近10天来,气促、浮肿加重,心率128次/分,心律绝对不齐,首选的治疗是()

A.静脉注射西地兰

B.静脉注射硝普钠

C.静脉注射硝酸甘油

D.静脉注射氨碘酮

E.直流同步电复律

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“总价”栏应填写( )。

A.627.50

B.60371.78

C.62288.576

D.62469.69

题型:填空题

.初始地籍就是历史上第一次形成的地籍。

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