问题 问答题 简答题

控制器闭锁内容是什么,它的作用是什么?

答案

参考答案:

是控制器主令控制开关与换向器之间的机械联锁装置,其作用为:保证换向开关在换向时不带电接通或分断机车电气回路,同时还可避免司机操作时出现失误而造成电气短路的故障。

完形填空
There was once a farmer who had a fine olive orchard(橄榄园). He was very hardworking, and the  36  always prospered(繁荣)under his care. But he knew that his three  37  looked down upon the farm work, and were eager to make wealth.
When the farmer was  38  and felt that he would die, he  39  the three sons to him and said, “My sons, there is a pot of gold  40  in the olive orchard. Dig for it, if you wish it.”
The sons tried to  41  him to tell them in what part of the orchard the  42  was hidden, but he would tell them nothing more.
After the farmer was  43 , the sons went to work to find the pot of gold; since they did not  44  where the hiding-place was, they agreed to begin in a line, at one  45  of the orchard, and to dig until one of them should find the money.
They  46  until they had turned up the  47  from one end of the orchard to the other,  48  the tree-roots and between them.  49  no pot of gold was to be found. It seemed as if someone must have stolen it, or as if the farmer had been wandering in his wits. The three sons were bitterly  50  to have all their work for nothing.
The next olive  51 , the olive trees in the orchard bore(结果实)more fruit than they had  52  given; when it was  53 , it gave the sons a whole pot of gold.
And when they saw how much money had  54  the orchard, they suddenly understood what the wise father had  55  when he said, “There is gold hidden in the orchard. Dig for it, if you wish it.”
小题1:
A.farmB.gardenC.factoryD.hospital
小题2:
A.friendsB.sons C.relativesD.children
小题3:
A.healthyB.oldC.unluckyD.sad
小题4:
A.showedB.ledC.calledD.visited
小题5:
A.sentB.putC.hiddenD.locked
小题6:
A.waitB.causeC.makeD.get
小题7:
A.goodsB.jewelC.clothesD.gold
小题8:
A.weakB.lost C.dead D.sick
小题9:
A.thinkB.know C.wonderD.realise
小题10:
A.endB.topC.surface D.bottom
小题11:
A.dugB.searched C.discoveredD.expected
小题12:
A.sandB.soil C.ground D.floor
小题13:
A.overB.amongC.roundD.across
小题14:
A.SinceB.AndC.Before D.But
小题15:
A.disappointedB.surprisedC.worriedD.sad
小题16:
A.season B.partC.distance D.degree
小题17:
A.alreadyB.even C.ever D.still
小题18:
A.made B.sold C.shippedD.saved
小题19:
A.come onB.come aboutC.come upD.come from
小题20:
A.thoughtB.plannedC.guessed D.meant
填空题