直埋警示牌为双脚，用搪瓷材料制成，总高（），埋设在光缆线路（）。

 阅读理解。

       Today we find that school students hardly spend much time on sports. Is it because they aren't

  interested in sports? No, they often say they have other more important things to do.

       What are these important things? Exams! They have to spend much time on all kinds of exams at

  school. So many of them almost become bookworms (书呆子). Books stop them from going out for

  sports. Because of the pressure from their parents and teachers, the students have to work harder and

  spend most of their time on books. As for the students, they want to get good results in order to improve

   their studies. So it is necessary for them to give all of their free time to their studies and stop their school

  sports.

       In fact, education (教育) can't go without (没有) physical (身体的) exercises, because a quick

  mind hardly goes along with a weak body. If you don't have a strong body, you can never get anything or

  any great success (成功) in your life.

1. Because of _____, the school students can't spend much time on sports.

A. no interest

B. exercise

C. education

D. exams

2. The word "pressure" means _____.

A. happy feeling

B. good idea  

C. nervous feeling

D. deep love

3. If you don't have _____, you can never get anything.

A. good parents

B. a strong body

C. a weak body

D. enough time

4. In the writer's opinion, students should _____.

A. work all day and night

B. not have sports

C. have sports after studying

D. spend all their free time studying

5. Which of the following is WRONG?

A. The students don't go out for sports because of their parents.

B. Physical exercises are very important for education.

C. A person can't become successful with a weak body

D. The students stop their school sports because of studies and exams.

根据规定，对工程质量负总责的单位应该是()。

A.铁路建设工程质量监督机构 

B.建设单位 

C.勘察设计单位 

D.施工单位

江苏全面辅开新型农村社会养老保险，为农村老人系上社会养老保险的“安全带”，从而实现“老有所养”。这一举措[ ]

①是建立我国根本政治制度的必然要求

②有利于完善我国的社会保障制度

③体现敬老、爱老的中 * * 优良传统

④践行了以人为本的科学发展观

A．①②③

B．①②④

C．②③④

D．①③④

循环水泵在运行中出口压力异常降低，是由于（）。

A.水泵电流减小；

B.循环水入口温度降低；

C.机组负荷较低；

D.循环水入口过滤网被堵或入口水位过低。

铬镍奥氏体不锈钢普通18—8型不锈钢耐什么介质的腐蚀？18—8型不锈钢不耐什么介质的腐蚀？