物资部需要加强对在用机具和防护用品的管理,对自有及协力自备的机具和防护用品定期进行检

题型:单项选择题

问题:

物资部需要加强对在用机具和防护用品的管理,对自有及协力自备的机具和防护用品定期进行检验、鉴定,对不合格品及时( )、更新,确保使用安全。

A.报废
B.停用
C.淘汰
D.检测

考点:安全员建筑施工安全管理
题型:单项选择题

患者上腹痛1月余,伴恶心呕吐,首选的X线检查方法是()。

A.腹部透视

B.摄腹部平片

C.胃肠道造影

D.食管造影

E.钡剂灌肠

题型:单项选择题

阅读理解。

     Teenagers in England do much the same as children in America do. They enjoy sending messages by

their mobile phones and they also like swimming, listening to the latest music, watching TV and surfing the

Internet.

      How do teenagers in England spend their free time and holidays? Let's follow Sally, a British teenager, and spend five days with her during her school holiday.

      Day One

     After breakfast, Sally's mother went out and left her alone at home. She checked her mobile phone

during lunch -one of her friends sent her a message early in the morning. Dinner was at 6:30 p.m. After

that, she finished her English homework. Then she surfed the Internet.

     Day Two

     Sally and her mother paid a visit to their friends and went swimming together. Later, they went shopping for clothes and books, and had dinner in a restaurant.

     Day Three

     She went to the supermarket with her mother to buy fish and chips for lunch as well as some pens.

After she got back home, she spent the next few hours surfing the Internet and watching TV.

     Day Four

     She surfed the Internet. Her mother took her out for lunch before she went to work. She then read

stories after lunch.

     Day Five

    She woke up at 2 p.m., and so did her mother. They went to a park. Her mother met some friends

there. When they got home, it was already time for dinner. Afterwards, she did her homework until 10

p.m.

1. Sally and her mother went shopping again to buy _____.

A. food for lunch and pens

B. some books and pens

C. some fish and clothes

D. food and books

2. Which of the following things did Sally do on Day Four?

A. She went swimming.

B. She went out for breakfast.

C. She read books. 

D. She went shopping.

3. According to the passage, it can be inferred that _____.

A. a park is the best place to meet a friend

B. parents shouldn't leave teenagers alone at home

C. teenagers don't usually do their homework during their school holidays

D. surfing the Internet has become an important part of teenagers' lives

题型:单项选择题

按材料比强度高低排列正确的是()

A.木材、石材、钢材

B.石材、钢材、木材

C.钢材、木材、石材

D.木材、钢材、石材

题型:单项选择题

计算机网络协议的语法规定了用户数据与控制信息的结构和______。

题型:单项选择题

当航班上的飞行机组成员中要求有飞行机械员时,则规定()。

A.1名驾驶员持有飞行机械员执照,从而使其有资格在紧急情况下履行飞行机械员的职责

B.已有1名持有执照且合格的飞行机械员,但还至少另有1名持有执照并合格的飞行机组成员履行飞行机械员职责

C.至少有1名其他飞行机组成员有资格履行飞行机械员职责,但不需要持有执照

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