钢中SiO2属于非金属夹杂物。_爱下问搜题

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问题判断题

钢中SiO2属于非金属夹杂物。

答案

参考答案：对

完形填空

Directions: For each blank in the following passage there are four words or phrases marked A,B,C and D. Fill in each blank with a word or phrase that best fits the context.
Being alone in outer space can be   36 . That is one reason why astronauts on solo(单独的) space flights were given plenty of work to keep them   37 . They were also in constant communication with people on the earth.   38 , being with people from whom you cannot get away might be even harder than being alone. This is what happens on long submarine(潜水艇) voyages. It will also happen on 39 space flights in the future. Will there be special problems of adjustment under such conditions?
Scientists have studied the reactions of men to one another during long submarine voyages. They have also found that the longer the voyage lasts, the more serious the problem of 40 is. When men are 41 together for a long period, they begin to feel   42  . Everyone has little habits of speaking and behaving that are ordinarily acceptable. In the limited space over a long period of time, however, these little habits may become very   43 .
Apparently, although no one wants to be 44 all the time, everyone needs some degree of privacy. When people are enclosed together, they are in what is called stress situation. That means that they are under an unusual amount of 45 or stress.
People who are well-adjusted are able to   46 stress situations better than others. That is one reason why so much care is taken in   47 our astronauts. These men undergo a long period of testing and training. One of the things tested is their behavior under stress, and thus they can do better than ordinary people.

B．frightening

B．entertainment

C．comfortable

D．investigate

判断题

集权型财务管理体制下，各所属单位有自主经营的权利，但是无重大问题的决策权。 ( )