正常食管内的pH值是() A.2.5~4.0 B.3.5~5.0 C.4.5

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问题:

正常食管内的pH值是()

A.2.5~4.0

B.3.5~5.0

C.4.5~6.0

D.5.5~7.0

E.6.5~8.0

考点:内科学(医学高级)消化系统疾病消化系统疾病题库
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科德把错误分成失误和偏误两种,失误是系统的、有规律的,而偏误是不成系统、_______出现的。

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Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (52) an educational institution, and they are required to study for a (53) of fifteen hours a week on a daytime course. Prospective students have to show that they can afford their studies, and that they have sufficient (54) resources to support themselves (55) in this country.

In order to work here the foreigner needs a work permit, (56) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (57) these permits, and there is little that can be done (58) it; it would be extremely unwise for a foreign visitor to work (59) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the European countries, who are often given (60) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (61) part-time jobs while they are studying here.

59().

A.with 

B.before 

C.after 

D.without

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继发性雷诺综合征的病因()

A.结缔组织病

B.原发性肺动脉高压

C.卒中

D.β-受体阻滞剂

E.硝苯地平

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PC机中CPU执行MOV指令从存储器读取数据时,数据搜索的顺序是( )。

A.从L1 cache开始,然后依次为L2 cache、DRAM和外设

B.从L2 cache开始,然后依次为L1 cache、DRAM和外设

C.从外设开始,然后依次为DRAM、L2 cache和L1 cache

D.从外设开始,然后依次为DRAM、L1 cache和L2 cache

题型:单项选择题

下列商业银行同业拆借行为不违反法律的是()。

A.约定拆借期限6个月

B.用拆入资金固定资产贷款

C.拆出资金时尚有少量到期的贷款未归还中国人民银行

D.将拆入资金用于解决临时性周转资金的需要

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