8253的功能是什么?

题型:问答题 简答题

问题:

8253的功能是什么?

考点:微机原理微机原理题库
题型:问答题 简答题

类风湿关节炎预后不良的因素不包括()

A.男性

B.女性

C.受累关节大于20个

D.类风湿因子持续高滴度阳性

E.早发病

题型:问答题 简答题

阅读理解.

     America has long been considered the land of opportunity(机遇)by those from

other countries. Americans, too, believe that the United States gives almost limitless

opportunity for those who want to open business on their own.

     Today, Americans are still fond of trying their hand at becoming small business

people, even though only one out of two survives in the first two years. Many of these

people start their business for the wrong reason: to get away from the paper work of

their present jobs or to exchange the responsibility(责任)of their present jobs for free

life styles. But more, not less paper work and responsibility come with the ownership

of a small business.

     Not all small businesses succeed. Fifty percent of the 4,550,000 that start in the

United States ever fail(失败). Still ninety-five percent of businesses in the U.S. can

be regarded as small, and these businesses altogether produce forty percent of

America's total national products.

1. According to the passage, which of the following statements is TRUE?______

A. People from other countries and Americans think there are a lot of

opportunities in theU.S.

B. Only the Americans think the U.S. can give them many opportunities.

C. Both people from other countries and Americans believe they have many

opportunities in the U.S so that they can do whatever they like.

D. People from other countries and Americans all think the U.S. the place where

they can realize their dreams.

2. From this passage, we know that ____.

A. many people from other countries think that in the past there were many

opportunities in the U.S. but not now

B. now Americans don't believe the U.S. can give them a lot of opportunities

C. people from other countries still think they have more opportunities in the

U.S. than in their own countries

D. Americans think they have more opportunities to start their own business than

those from other countries

3. According to this passage, many American people like to start their own

business because ____.

A. they want to become rich soon

B. they not only dislike their present job but also want a free life style

C. they don't want to do paper work

D. they want to have more chances

4. From this passage, we can get the idea that ____.

A. it is easy to do business successfully in the U.S.

B. it is easy to start a business but hard to make it successful

C. there are more big businesses than small businesses in the U.S.

D. only big businesses can succeed in the U.S.

题型:问答题 简答题

根据JB4708—92《钢制压力容器焊接工艺评定》的规定,当焊接接头有冲击韧度要求时,焊接热输入属于()。

A.重要因素

B.补加因素

C.次要因素

题型:问答题 简答题

患儿,男,3岁。发热3天,鼻塞流涕,眼脸红赤,泪水汪汪,口腔颊黏膜见有细小白色疹点,周围红晕,舌苔薄黄。治疗应首选()

A.清解透表汤

B.宣毒发表汤

C.银翘散

D.桑菊饮

E.透疹发表汤

题型:问答题 简答题

脊柱是由()椎骨、一块骶骨和尾骨组成。

A.7块

B.12块

C.24块

D.28块

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