使用调整液气大钳高度的手拉小绞车，将液气大钳的高度调整到合适位置。

生物多样性不包括

A．物种多样性

B．环境多样性

C．遗传多样性

D．生态系统多样性

反映离散趋势的统计量有（）

A、离差

B、众数

C、方差

D、全距

     It is a hot summer day, and you feel thirsty. A friend gives you a glass of cold lemonade. How do

you feel when you see the glass? Will you describe your feeling as happiness or as pleasure? I believe

you will say it is a feeling of pleasure. There is a connection between these two kinds of feelings, and

sometimes one causes the other, but they are not the same. Pleasure is more dependent on the five

senses while happiness is independent of them.

     When you are happy, little unpleasant events usually do not disturb you. When you are unhappy, you

feel as if everything is against you. You may compensate_for it by eating chocolate and sweets because

this gives you pleasure, yet you stay unhappy. A person may smoke cigarettes because it gives him

pleasure, yet this does not make him happier, especially if he knows the fact that it is not good for his

health.

     The physical world is always in a changing state. At each moment a new thing is being created,

changed, transformed and then destroyed. This is the normal state of things and no one can change it.

If we stay still in a certain state, we are sure to experience unhappiness sooner or later. On the other

hand, if we adjust to the environment, nothing can influence our moods. Then outer events have nothing

to do with our inner joy of mind.

     The room of the mind is filled with worry or fear. If you are free of thinking about them, the room has been emptied, and then you will see what is happening and experience it. When your mind stays quiet, you will see that happiness comes from the inside.

1. What does the underlined phrase "compensate for" in Paragraph 2 most probably mean?

A. to make a suitable payment for

B. to let out your anger for

C. to provide with a balancing effect for

D. to solve the problems for

2. According to the passage,in which of the following situations can you feel happy?

A. A friend gives you a glass of cold lemonade when you feel thirsty.

B. You eat chocolate and sweets when you feel as if everything is against you.

C. Smoke cigarettes even though you know the fact that it is not good for your health.

D. You are free from worry or fear when your mind stays quiet.

3 We can learn from the passage ________.

A. happiness is more dependent on the five senses

B. pleasure sometimes arouses happiness

C. you feel happy when nothing around you changes in a certain state

D. you feel unhappy because you have to adjust to the environment

4. Which can be the best title for the passage?

A. Pleasure Leads to Happiness

B. Happiness Changes Us

C. Happiness Is Within Us

D. Stay a Quiet Mind

下列选项中，( )属于设备工程项目中的动态信息。

A．作业方法

B．国家和行业标准

C．人工、材料和机械台班消耗

D．各种消耗量定额

以下哪种不是常见探棒种类。（）

A.磁致伸缩式

B.电容式

C.放射式

D.压力式