透度计是用来()的A、确定可检出的裂纹与气孔的尺寸 B、确定可检出的裂纹深度 C、确

题型:单项选择题

问题:

透度计是用来()的

A、确定可检出的裂纹与气孔的尺寸

B、确定可检出的裂纹深度

C、确定临界裂纹尺寸

D、指示射线照相技术质量

考点:无损检测技术资格人员考试中级无损检测技术资格人员中级无损检测技术资格人员题库
题型:单项选择题

神经修复后的固定时间正确的是().

A.1~2周

B.2~3周

C.3~4周

D.4~6周

E.4~8周

题型:单项选择题

在投资估算时难以预料的支出,需要预先预留的费用称为()。

A.铺底流动资金

B.基本预备费

C.涨价预备费

D.调节税

题型:单项选择题

阅读理解.

     Many animals recognize their food because they see it. So do humans. When you see

an apple or a piece of chocolate you know that these are things you can eat. You can also

use other senses when you choose your food. You may like it because it smells good or

because it tastes good. You may dislike some types of food because they do not look,

smell or taste very nice. Different animals use different senses to find and choose their food.

A few animals depend on only one of their senses, while most animals use more than one

sense.

     Although there are many different types of food, some animals spend their lives eating

only one type. The giant panda eats only one particular type of bamboo(竹子). Other animals

eat only one type of food even when given the choice. A kind of white butterfly will stay on

the leaves of a cabbage, even though there are plenty of other vegetables in the garden.

However, most animals have a more varied diet(多样化饮食). The bear eats fruits and

fish. The fox eats small animals, birds and fruits. The diet of these animals will be different

depending on the season.

     Humans have a very varied diet. We often eat food because we like it and not because

it is good for us. In countries such as France and Britain, people eat foods with too much

sugar. This makes them overweight, which is bad for their health. Eating too much red meat

and animal products, such as butter, can also be bad for the health. Choosing the right food,

therefore, has become an area of study in modern life.

1. We can infer from the text that humans and animals _________.

A. depend on one sense in choosing food

B.are not satisfied with their food

C. choose food in similar ways

D. eat entirely different food

2. Which of the following eats only one type of food?______.

A. The white butterfly.

B. The small bird.

C. The bear.

D. The fox.

3. Certain animals change their choice of food when ___________.

A. the season changes

B. the food color changes

C. they move to different places

D. they are attracted by different smells

4. We can learn from the last paragraph that __________.

A. food is chosen for a good reason

B. French and British food is good

C. some people have few choices of food

D. some people care little about healthy diet

题型:单项选择题

胶轮车通过巷道的安全距离,距两侧付着物突出部分不得小于1米,距顶板吊挂物突出部分不得小于0.3米。

题型:单项选择题

下列关于发动机大修程序的说法哪一个是正确的?()

A.对于一个进气衬垫,检查其是否损坏或者弯曲,如果没有则再次使用

B.对于排气歧管安装螺栓和螺母,按顺序从一号气缸侧将其松开

C.进气/排气歧管必须使用塑料区螺栓安装

D.均匀地上紧进气歧管安装螺栓和螺母,顺序为从中间向两端,一次上紧一点,最终按照同样的顺序将螺栓和螺母上紧到规定的扭矩。

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