问题 问答题 简答题

主混合器转速低报或停止的原因及处理方法。

答案

参考答案:原因:

下料口堵塞;

转动电机温度高报连锁跳车;

传动皮带松动。

处理:

检查下料口反吹氮气流量,清理氮气入口过滤器;

给电机轴承添加润滑脂;

更换皮带。

完形填空

Universities are institutions that teach a wide variety of subjects at advanced levels. They also carry out research work aimed at extending man's knowledge of these subjects. The emphasis given to each of these functions   __21_____from university to university, according to the views of the people in ___22___ and according to the resources available. The smaller and newer universities do not ____23_____ the staff or equipment to carry out the vast research projects possible in larger institutions. But most experts agree that some research activity is _____24______ to keep the staff and their students in ____25_____ with the latest developments in their subjects.

Most students attend a university mainly to ____26_______ the knowledge needed for their chosen profession. Educationists believe that this aim should not be the only one. Universities have always aimed to produce men and women with judgment and wisdom as well as knowledge. For this reason, they ____27____ students to meet others with differing _____28_____ and to read widely to increase their understanding in many fields of study. Upon a secondary school course, a student should be interested enough in a subject to enjoy gaining knowledge for its own _____29_______. He should be prepared to ____30______ every effort to study his chosen field in depth. He should have an ambition to make some truthful contribution to man's knowledge.

21.A.turns       B. ranges       C. moves            D. varies

22.A. order      B. place         C. control              D. favor

23.A. occupy     B. possess       C. involve          D. spare

24.A. natural     B.casual       C. possible          D.essential

25.A. effect      B. mind        C. touch                D. grasp

26.A. acquire     B. accept       C. endure          D. ensure

27.A. arrange     B. suggest     C. encourage              D. anticipate

28.A. histories   B. interests          C. expressions         D. curiosities

29.A. object      B. effect        C. course           D. sake

30.A. take       B. make          C. suffer             D. pay

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