变配电所的电气安装图必须包括：变配电所一次系统接线图、变配电所平面图和剖面图、变配电

下尿路感染的典型症状

A．水肿、少尿、高血压
B．水肿、蛋白尿、低蛋白血症、高胆固醇血症
C．血尿、高血压、氮质血症、补体低下
D．尿频、尿急、尿痛
E．循环充血、高血压脑病、急性肾衰

“西气东输”是我们政府开发大西北的一项重大工程。将新疆的天然气通过4200km的管道向东输送至沿线各省和长江三角洲地区。

（1）天然气的主要成分是                     （填化学式）。

（2）用天然气替代煤和燃油，其优点是                                                 。（任答一点）

（3）天然气燃烧的化学方程式为                                                     。

阅读理解。

     Suppose we built a robot to explore the planet, Mars.We provide the robot with seeing detector (探

测器) to keep it away from danger. It is powered entirely by the sun. Should we program the robot to

be equally active at all time? No.The robot would be using up energy at a time when it was not receiving

any. So we would probably program it to stop its activity at night and to wake up at dawn the next

morning.

     According to the evolutionary (进化的) theory of sleep, evolution equipped us with a regular pattern

of sleeping and waking for the same reason.The theory doesn't deny that

sleep provides some important restorative functions. It merely says that evolution has programmed us to

perform those functions at a time when activity would be inefficient and possibly dangerous. However,

sleep protects us only from the sort of trouble we might walk into; it doesn't protect us from trouble that

comes looking for us. So we sleep well when we are in a familiar and safe place, but we sleep lightly, if at

all,when we fear that bears will nose into the tent.

     The evolutionary theory explains the differences in sleep among creatures.Why do cats,for instance,

sleep so much,while horses sleep so little? Surely cats do not need five times as much repair and

restoration as horses do.But cats can afford to have long periods of inactivity because they spend little

time eating and unlikely to be attacked while they sleep. Horses must spend almost all their waking hours

eating, because what they eat is very low in energy value. Moreover,they cannot afford to sleep too long

or too deeply, because their survival depends on their ability to run away from attackers.

1.The author used the example of the robot in space exploration to tell us _____.

A. the differences between robots and men

B.the reason why men need to sleep

C.about the need for robots to save energy

D.about the danger of men working at night

2. Evolution has programmed man to sleep at night mainly to help him _____.

A. avoid danger and ineffective labor

B. restore his bodily functions 

C. prevent trouble that comes looking for him

D. keep up a regular pattern of life

3. Cats sleep much more than horses do partly because they  _____.

A. are more active than horses when they're awake

B. need more time for restoration

C. spend less time eating to get enough energy

D. are unlikely to be attackers

4.Which of the following is the main idea of the passage?

A. The study of sleep is an important part of the evolutionary theory.

B. The sleeping pattern of a living creature is determined by the food it eats.

C. Sleeping patterns must be taken into consideration in the designing of robots.

D. Evolution has equipped all creatures with a regular pattern of sleeping against waking.

护理人员的道德情感不包括（）。

A.对病人高度负责

B.对事业的无私奉献

C.对个人利益的追求

D.对生命的热爱与尊重

在蒸汽管道系统中，用热设备出口必须安装的阀门是（）。

A.安全阀

B.截止阀

C.疏水阀

D.球阀