用NA表示阿伏加德罗常数的值.下列叙述正确的是( ) A.3.6g碳与3.36L

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问题:

用NA表示阿伏加德罗常数的值.下列叙述正确的是(  )

A.3.6g碳与3.36LO2一定条件下恰好完全反应,生成CO分子数一定为0.3NA

B.6.9g钠与足量的CO2和H2O(g)混合气体充分反应,转移的电子数一定为0.3NA

C.25℃时,0.15mol/L的Na2CO3溶液中,Na+数目为0.3NA

D.标准状况下,2.24L氯仿中含有C-Cl数目为0.3NA

考点:阿伏加德罗常数
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把4升的水倒入500毫升的量杯,可以倒______杯.

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患者女性,38岁,患有滴虫性 * * 炎,患者向护士询问内裤的处理方法

A.煮沸消毒5~10分钟
B.日光暴晒
C.肥皂清洗
D.食醋浸泡
E.紫外线消毒

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在当前班级管理实践中,有两种领导方式运用得比较多,一是“教学中心”的领导方式;二是______的领导方式。

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Passage Three

A chain of shops in East Yorkshire, England has been told that it would be a criminal offence to sell thousands of tubes of toothpaste made by a leading French manufacturer simply because the small print giving the firm importing it does not include the letters "UK". Under cosmetics regulations implementing 25 separate European Union instructions, unless the address is London, which is "a major city", the letters UK must be added. The suppliers response, when Gordon Rodgers’s A2Z chain asked them to take back the toothpaste, was that this would pose no problem, because trading standards officials elsewhere in Britain do not bother about such fault-finding to a very minute detail.
A2Z, which sells a range of more than 10 000 household items from its 14 discount stores in Hull and East Yorkshire, first stumbled into these mysterious requirements of cosmetic labelling when summoned by East Yorkshire trading standards officials on a criminal charge of selling tubes of the same brand of toothpaste, Mentadent, designed for the South African market. These carried the name of a German distributor but no UK supplier. The council had no complaint about the toothpaste itself.
It is common and legal practice for supermarkets and discount stores to buy up a wide range of branded products packaged by leading European and American manufacturers for non-EU markets. These can then be sold at prices lower than those recommended for identical products in Europe, which are only more expensive because EU consumers can supposedly afford to pay more.
Council officials were quick to point out that they support the contribution this gray economy makes to "healthy competition". The only problem was that importers’ details must be given by the regulation formula. For a major city such as London only a postcode is necessary, but for other cities and towns the letters UK must be added.
When A2Z asked how it was expected to examine the small print on the labelling of each of 10 000 products it carries, East Yorkshire replied that it was up to the firm to improve the quality of their inspection procedures. A2Z then supplied the council three weeks running with examples of similar products carrying "illegal labelling", bought from major supermarkets in the same area, asking why these large firms were not also prosecuted. The council said it "did not have the resources" to chase up every case of illegality, to which Mr. Rodgers responded that he "did not have the resources" to improve the quality of their inspection procedures, which the council was asking of him. Last week his firm’s case was adjourned.

What does the article tell us about the EU

A.They look after customers’ interests.

B.They are very strict with the labelling of cosmetics.

C.They just make work to give themselves a job.

D.They protect EU suppliers.

题型:选择题

通过抑制血管紧张素转化酶而发挥抗高血压的药物是()

A.可乐定

B.依那普利(苯丁酯脯酸)

C.利血平

D.硝普钠

E.哌唑嗪

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