下列项目中,不是含硫化氢气体采样注意的内容是()。A、采样时有人监护 B、站在上风向C

题型:单项选择题

问题:

下列项目中,不是含硫化氢气体采样注意的内容是()。

A、采样时有人监护

B、站在上风向

C、气体压力

D、戴好防毒面具和劳保用品

考点:加氢裂化装置操作工考试初级加氢裂化装置操作工初级加氢裂化装置操作工题库
题型:单项选择题

寒冷的冬天,在一个玻璃瓶里装满水并拧紧瓶盖,晚上把它放到室外,第二天早上发现瓶里的水接成了冰,而瓶子破裂了,破裂的原因是______.

题型:单项选择题

下列属于无形资产的是( )。

A.建设单位开办费

B.长期待摊投资

C.土地使用权

D.短期待摊投资

题型:单项选择题

Of all the areas of learning the most important is the development of attitudes. Emotional reactions as well as logical thought processes affect the behavior of most people.
"The burnt child fears the fire" is one instance; another is the rise of despots like Hitler. Both examples also point up the fact that attitudes stem from experience. In one case the experience was direct and impressive; in the other it was indirect and cumulative. The Nazis were indoctrinated largely by the speeches they heard and the books they read.
The classroom teacher in the elementary school is in a strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose word they respect.
Another reason it is true is that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home or has possibly never occurred to them before. To a child who had previously acquired little knowledge of Mexico, his teacher’s method of handling such a unit would greatly affect his attitude toward Mexicans.
The media through which the teacher can develop wholesome attitudes are innumerable. Social studies (with special reference to races, creeds and nationalities), science matters of health and safety, the very atmosphere of the classroom... these are a few of the fertile fields for the inculcation of proper emotional reactions.
However, when children come to school with undesirable attitudes, it is unwise for the teacher to attempt to change their feelings by cajoling or scolding them. She can achieve the proper effect by helping them obtain constructive experiences.
To illustrate, first grade pupils afraid of policemen will probably alter their attitudes after a classroom chat with the neighborhood officer in which he explains how he protects them. In the same way, a class of older children can develop attitudes through discussion, research, outside reading and all-day trips.
Finally, a teacher must constantly evaluate her own attitudes, because her influence can be deleterious if she has personal prejudices. This is especially true in respect to controversial issues and questions on which children should be encouraged to reach their own decisions as a result of objective analysis of all the facts.

It can be inferred from the passage that the pupils ______.

A.usually study a certain subject in greater details at home than at school

B.usually do not study a certain subject at home

C.study the subjects only at school

D.study a subject more deeply at school than at home

题型:单项选择题

不适合营养疗法的病人是()

A.休克

B.短肠综合征

C.器官移植后

D.食管癌进展期

E.肝癌晚期

题型:单项选择题

( )调音台输入通道中辅助旋钮的作用是调节该路信号送往辅助母线的大小。

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