铜和铝搭接时，在干燥的室内铜导体应搪锡，在室外或特殊潮湿的室_爱下问搜题

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问题判断题

铜和铝搭接时，在干燥的室内铜导体应搪锡，在室外或特殊潮湿的室内应使用铜铝过渡片。

答案

参考答案：对

完形填空

完形填空（共15小题，计15分）
通读下面短文，掌握其大意，然后在各题所给的四个选项(A、B、C和D)中选出一个最佳选项。
Each of us fails from time to time. If we are wise, we accept these failures as a necessary   1  of the learning process. But too often as parents and teachers we deny this same right to our children. We convey(传达) 2   by words or by actions that failure is something to be ashamed of, that nothing but   3  performance pleases us.
4 I see a child under this kind of pressure ,I think of Jack. He is a shy, nervous perfectionist. He   5 answered questions—he might be   6  .
I try my best to    7 his self-confidence. And I repeatedly  8  God for direction. But   9  changed until midterm, when Mary, a student teacher, came to our classroom.
One day we were working with math problems. Jack had copied the problems with care. 10  with his progress, I left the children with Mary .When I returned, Jack was in tears. He’d missed the third problem.
At that time, Mary got a box 11  with pencils from the desk we shared. “Look, Jack ! I’ve got something to show you.” she said.“ See these pencils, they belong to Mrs. Green and me. See how the erasers are   12  ? That’s because we make mistakes too. But we erase the mistakes and try   13 . That’s what you must learn to do, too.” Jack looked up with 14  in his eyes---the first time I’d see on his face that year.
Jack gradually believe him that it’s all 15 to make mistakes – as long as you erase them and try again.

A．disappointment

单项选择题

社会行为是人对( )引起的并对社会产生影响的反应系统。

A．社会环境
B．现实生活
C．周围环境
D．即时情境