减压阀在液压系统中起调压作用,正常工作的出口压力保持恒定,不工作时阀内回路处于常闭状

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问题:

减压阀在液压系统中起调压作用,正常工作的出口压力保持恒定,不工作时阀内回路处于常闭状态()

考点:数控机床操作工考试数控机床操作工考试题库
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传统行政文化制约着政府职能的转变。 ( )

题型:判断题

阅读理解

    "Who needs  a  shopping mall (购物中心 ) if you have Taobao?" says Wang Lin,28,a writer in

Beijing. Taobao ,China's largest online shopping site(网上购物网站),has become an important part

of Wang Lin's life. She spends lots of money on Taobao. A growing number of Chinese Internet users

like Wang have found the joys of online shopping. Most online shoppers are students or young workers. More women shop on line than men. Clothing and home-use products are the most popular on line. It

was reported that more than 250 billion yuan, was spent on online shopping last year,80% through

Taobao. Taobao means "looking for treasure" in Chinese. People can find almost everything they need

on Taobao,from clothes to books,from candies to DVD players. " You may question the security of

online shopping," Wang Lin said,"It's very safe and convenient. Unless you receive the products from

the sellers and are satisfied with them,the shop owner will not get the money. You can also get your

money back if you want to return the products. "

1. What are the most popular on line? 

A. Candles and DVD players.

B. Clothes and books

C. Clothing and home-use products

2. Taobao is       .

A. a shopping mall

B. an online shopper

C. an online shopping site

3. Most online shoppers are          .

A.young

B.old

C.babies

4.What does the underlined word "security" mean?

A.质量

B.安全

C.信誉

5. Which  is the best title (标题) of the passage?

A. Wang Lin's life

B. Online shopping in China

C. Shopping on line is not safe

题型:判断题

要约:一方当事人发出的要求另一方特定的当事人作出回应与其签订合同的意思表示。根据以上的定义,下列哪种行为是典型的要约( )

A.宝洁公司做出飘柔洗发水的广告

B.城乡贸易中心打折商品的标价

C.搜狐网站在网上招聘体育编辑和软件工程师

D.甲公司需要建筑用钢材,向乙建材公司发出信函,要求购买其产品

题型:判断题

下图是某晴天的上午,李小霞设计的实验装置,请你据图回答:

(1)下午打开口袋时,迅速把一支将熄灭的火柴伸进袋内,火柴复燃了,说明袋内          较丰富,这是             的结果。

(2)傍晚再套上塑料袋,扎紧袋口,第二天天亮就打开袋口,迅速伸进一支燃着的火柴,火柴熄灭了,说明袋内的         较丰富,这是            的结果。

题型:判断题

女,32岁,刺激性咳嗽,干咳,偶有少量黏稠痰,受寒冷刺激加重,伴气促,每天夜间、清晨均有剧咳而影响睡眠,用过青霉素、头孢菌素和多种祛痰止咳剂,疗效不满意。查体:双肺散在干性啰音,心脏正常。胸片示:心肺无异常,血白细胞12×109/L。

下列哪项检查对诊断有帮助()

A.胸片

B.纤维支气管镜

C.胸CT

D.乙酰胆碱激发试验

E.肺通气功能

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