问题 问答题 简答题

说出推压保险闸的工作原理?

答案

参考答案:

当推压机构过载时,安装在二轴大齿轮内壁上的闸瓦在闸轮上的自动打滑,动力不能传递到推压二轴上,铲杆停止了进退,这就保证了电动机和传动件不受损坏。

完形填空
A group of adults, highly succeeded in their jobs, went to visit their old professor. Soon they began to         the stress in work and life.
The professor went to the kitchen and returned      a pot of coffee  and  all  kinds  of cups-crystal(水晶的), glass, plastic, some nice looking, some plain looking, some     , some cheap. And he told them to help       to the coffee. When all the students had a cup of coffee in hand, the professor said, "I've noticed that all the nice looking expensive cups were     , leaving behind the plain and cheap ones. While it is      for you to take only the best for yourselves, that is the root of your     and stress. You know that the cup itself adds no quality to the coffee.       you really wanted was coffee, not the cup,     you consciously went for the best cups.
Now consider this.Life is the coffee. The jobs, money and     in society are the cups. They are just      to hold life. and the type of cup does not change the quality of our life. Sometimes, by       only of the cup, we fail to enjoy the coffee that God has    us. God offers us the coffee, not the cups.  Please enjoy your coffee ! "
The happiest people don't have the best of everything. They just make       of everything.
Live simply. Love generously. Care deeply. Speak    . And leave the rest to God.
小题1:
A.think ofB.thank forC.complain aboutD.drop out
小题2:
A.forB.atC.inD.with
小题3:
A.expensiveB.ordinaryC.strongD.serious
小题4:
A.themB.themselvesC.himD.everyone
小题5:
A.mixed upB.left .C.taken upD.refused
小题6:
A.normalB.importantC.impossibleD.necessary
小题7:
A.thoughtsB.failureC.questionsD.problems
小题8:
A.WhoB.How muchC.WhatD.That
小题9:
A.andB.butC.soD.or
小题10:
A.position (职位)B.ageC.healthD.purpose
小题11:
A.cupsB.tools(工具)C.bagsD.bowls
小题12:
A.puttingB.gettingC.turningD.thinking
小题13:
A.taughtB.providedC.returnedD.bought
小题14:
A.funB.useC.the bestD.the worst
小题15:
A.kindlyB.sadlyC.rudelyD.seriously
单项选择题