F系列可编程控制器内部元件计数器为加法计数器，当计数器接通后_爱下问搜题

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问题判断题

F系列可编程控制器内部元件计数器为加法计数器，当计数器接通后，从设定值一直减到零时，计数器线圈有电，相应触点动作。

答案

参考答案：错

完形填空

On their wedding day, a young farmer decided to give his wife a present.The present was a mirror,and it made his wife very   26  because she had never seen herself before    27  in the waters of a pond or stream. When she looked in the mirror and saw her lovely   28 , the young woman laughed with   29 .The farmer was joyful, too. He knew he was lucky to have such a beautiful   30 .
After a few years,the young wife gave birth to a baby girl. But the birth was 31 and the young woman died. The farmer felt   32 sad that he put all his wife’s things   33  in in a box, including her   34  mirror.
The mirror   35  in the box for many years.
The daughter   36 , and with each year she 37 more and more like her mother. One day, her father took her to a quiet garden and   38 her about her mother and the mirror she so loved. The girl was so __39__ what her father said that she could not control (控制) herself. She took out her mother’s old things and __40_the mirror. She 41 the mirror in front of her face and looked   42 into it:“Father,father,come here,”she 43 ,“It’s mother. Her face is in the mirror.”
The face in the mirror is the girl’s face,   44 her father didn’t say a word.
He could not 45 . Tears were streaming down his face.

B．frightened by

D．interested in

单项选择题

坡顶截水沟应该在边坡开挖施工（）砌筑。

A.过程中

B.之前

C.之后