问题 问答题 论述题

论述皮带给煤机在运行维护中应注意什么?

答案

参考答案:

皮带给煤机一般作为翻车机受煤斗配煤用。运行人员在煤车翻卸完后,应将篦(bi)子上杂物拣出,禁止将杂物捅入煤斗,否则会造成皮带损坏及堵塞,影响卸车,积压车皮。运行中要对胶带加以检查,及时发现问题,及时进行处理。

胶带跑偏会造成皮带侧边的严重磨损,同时会造成煤落入二层皮带,大量地洒煤,造成皮带尾部滚筒卷煤以致拉断皮带。所以应注意皮带的松紧,及时调整皮带,保证皮带给煤机的正常运行。

胶带经常受到物料的冲击,也会使胶带损坏和缩短寿命。翻车机在翻卸中要注意不要将料斗拉空再停皮带给煤机。要保持料斗有一定的煤,尽量避免胶带受到物料冲击。

经常注意皮带机出入料处有无大块杂物卡塞,定期地对滚筒、减速机及各轴承加油,注意对开式齿轮的检查等维护性工作,保证设备完好与安全经济运行。

完形填空

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中由两项为多余选项。

­­­­­­­­­­­小题1:-----------------------

When we speak of a basic human need we mean something necessary to life, something we cannot do without. Food is a basic human need. Without it we would starve to death. Whether in primitive(原始的)countries or in more advanced societies, man’s food needs are the same. 小题2:

But primitive people eat only the food which can be grown near their homes, whereas people in more advanced societies eat food which is often grown many thousands of miles away from their homes. Primitive people are satisfied with less kinds of food, therefore we can say people’s wants are different although their needs are the same.

小题3:Clothing is necessary to regulate (调节) the heat of our bodies. In different climates and in different seasons we need more or less clothes. We also dress differently for other reasons. 小题4:

Shelter, the third of our needs, depends on climate, the skill of the builders, one’s social position, and the material which can be used. 小题5:The three-bed-roomed house of the average family would not be grand enough for a very rich family, but a modern house with many of the material comforts were denied to the kings and queens in the past.

A.Food, Clothing and Shelter.

B.Human Needs

C.We always change our style of clothing for different occasions, such as work, sports, parties.

D.We all need food to live a healthy life.E. We want to live comfortably .

F. The simple shelter of the primitive people would not do for us, and yet it satisfied their needs.

G. The same is true of the second of human needs.

单项选择题