电动吸引器吸痰是利用A．正压作用原理B．负压作用原理C．空吸作用原理D．静压作用原理

发布时间：2018-01-07 16:47 │ 来源：www.tikuol.com

题型：单项选择题

问题：

电动吸引器吸痰是利用

A．正压作用原理
B．负压作用原理
C．空吸作用原理
D．静压作用原理
E．虹吸作用原理

考点：执业护士护士专业实务执业护士专业实务

题型：单项选择题

阅读理解。

Newton was born on Christmas, 1642, in a small village in England. His father, a farmer, died when he
was young. He liked to repair clocks and make toys. He also was interested in astronomy (天文学). Newton
went to school at twelve. Soon after he had to stop as his mother wanted him to do farm work. When she
found her son was so interested in science, Mrs. Newton sent him to Cambridge (剑桥) University to study.
He was 19 at that time. Sometimes he had to work as a servant to go on his study. There he became a famous
scientist. At 23 he invented methods of calculation (计算) which have been used to nowadays. In 1665 he had
to leave the university and go home where he made two of his great discoveries. One is that he found the colour
of sunlight was made up of seven kinds. The other was the founding of force of gravity (地心引力), which
was one of the most important theories (理论) for modern science.

1. Newton was a great scientist. He ______.

A. discovered the law of nature
B. discovered the force of gravity
C. discovered the universe

2. Mrs. Newton hoped her son could become a ______.

A. worker
B. scientist
C. farmer

3. In Cambridge Newton often worked as a ______ to go on his study.

A. student
B. servant
C. scientist

4. Newton's first discovery was ______.

A. 7 colours of the sunlight
B. light
C. lens

5. Newton stopped studying when he was young, because ______.

A. his father died
B. his mother wanted him to be a farmer
C. his family was poor

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（用代入法）

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撒哈拉以南非洲的热带雨林主要分布在：[ ]

A．刚果盆地和几内亚湾沿岸

B．莫桑比克海峡沿岸

C．东非高原地区

D．地中海沿岸

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题型：单项选择题

读美国略图，回答问题．

（1）字母代表的地理事物名称：

邻国A______，B______；海洋C______；山脉E______．

（2）美国西部有一系列平行的南北走向的山脉，它们都是______山系的一部分．

（3）根据河流的流向，可判断密西西比河流域北部的地形要比南部______（高或低）．

（4）五大湖是过去______作用形成的，其附近的农业带是______，该农业带形成的条件有______、______．

（5）图中有美国著名的“硅谷”的城市是______，联合国总部所在地是______．（填图中序号）

（6）美国东北部因有丰富的矿产资源以及______洋沿岸的海港，______和密西西比河的水运条件，而成为美国最早开发的工业区．

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题型：单项选择题

按投资人愿意采纳的支付方式，项目组织方式可进行（）合同形式的选择。

A．咨询工程师管理合同

B．管理承包合同

C．监理工程师管理合同

D．管理业主合同

E．建造管理合同

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