下列物质中含有共价键的离子化合物是( ) A.KOH B.NaCl C.CO2

题型:选择题

问题:

下列物质中含有共价键的离子化合物是(  )

A.KOH

B.NaCl

C.CO2

D.CH4

考点:共价键离子化合物
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稳压时间为()

A.从开始加压至减压完毕的时间 

B.从稳压结束至减压完毕时间 

C.从稳压开始至减压开始的时间 

D.从开始加压至开始稳压的时间 

E.从开始加压至减压的时间

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韩国“天安舰”事件发生后,2010年7月美韩举行代号为“不屈意志”的军演,对朝鲜施加军事压力。下图是某网站新闻网的一幅图片,请根据图中信息回答:

(1)写出字母对应的国家:A_________;D________;E_________;F_______;H_______(军舰所属国家)。

(2)写出图中的海洋名称:C_________;B__________;G________。

(3)H国欲派航母进入B海军演;我国军方立刻宜布在东海进行实弹射击训练,以此明确表示我国反对H国的计划,明确宣示了我国对濒临的________海、_______海、________海的态度和利益红线。C海是我国的内海,我国对其拥有主权。

(4)世界上有些国家对我国管辖的_______万平方千米海域垂涎三尺,屡屡对我们的海域挑起事端。如下国与我国在_______岛问题上矛盾激烈,竟然扣押我捕鱼船只。此外,个别东南亚国家对我国的_______海诸岛也觊觎已久。

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In relation to the law of contract, discuss the remedies available that are directed at fulfillment of the contract in the event of an impending breach or breach of the contract. (10 marks)

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Should e-cigarettes (electronic cigarettes) be a new choice for the smokers trying to get rid of the habit? Reactions from Americans are mixed. More than half of the people questioned in a survey think e-cigarettes should be controlled by the US Food and Drug Administration, but 47 percent believe the e-cigarettes should be available to the smokers who want to quit.

“In the hunt for a safter cigarette, e-cigarettes are becoming a popular choice among those either trying to quit.”or looking to replace standard tobacco smoke with an alternative that manufacturers claim to be safer, ”Zogby International, which conducted the survey, said in a statement.

About half of the 4,611 adults who took part in the survey had heard about e-cigarettes, which are battery-powered, or rechargeable cigarettes that vaporize a liquid nicotine solution. They do not produce smoke but a water vapor without smell. Sold mostly on the Internet, e-cigarettes were first made in China.

Last year the World Health Organization (WHO) warned against using e-cigarettes, saying there was no evidence to prove they were safe or helped smokers break the habit. The WHO said people who smoke e-cigarettes breathe in a fine fog of nicotine into the lungs.

Nearly a third of people questioned in the survey think that e-cigarettes should be allowed in places where smoking is forbidden, because they don’t produce smoke, but 46 percent disagree. Men who were aware of the availability of e-cigarettes were more likely than woman to say they should be a choice available to smokers who want to quit. Young people, aged 18-29, and singles were the groups most open to trying e-cigarettes. Smoking is the single largest cause of preventable death worldwide, according to the WHO.

小题1:What can we learn from Paragraph 1?

A.American smokers ought to try e-cigarettes.

B.Americans have different opinions about e-cigarettes.

C.Every kind of cigarettes should be forbidden in America.

D.Most of the Americans don’t like e-cigarettes.小题2:According to Zogby International, e-cigarettes        .

A.are much safer than common cigarettes

B.are popular among people who want to quit smoking

C.will take the place of traditional cigarettes

D.are produced in a safer way by manufacturers小题3:What do we know about e-cigarettes from the passage?

A.Most Americans are familiar with them.

B.They are a good choice as there is no nicotine.

C.They produce a water vapor that can’t be seen.

D.Most people buy them on the Internet.小题4:What’s the attitude of the WHO towards e-cigarettes?

A.Negative

B.Supportive

C.Doubtful.

D.Indifferent

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密封风机对轮中心质量标准是什么?

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