控制器闭锁内容是什么，它的作用是什么？_爱下问搜题

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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.”

A．disappointed

填空题

根据地层划分的目的和适用范围不同，地层单位可分两种（）地层单位和（）地层单位。