问题
填空题
一根阻值是1OΩ的导体，用拉丝机在温度不变的情况下将其均匀拉长到原来的2倍 , 则导体电阻变为______Ω。
答案
40
搜题请搜索小程序“爱下问搜题”
一根阻值是1OΩ的导体，用拉丝机在温度不变的情况下将其均匀拉长到原来的2倍 , 则导体电阻变为______Ω。
40
| 完形填空。 | ||||
| Look 1 the woman in a yellow coat. 2 is my teacher. She teaches 3 English. She is a good teacher. Her 4 is Wang Hong. Her bike is red. 5 under the tree. Her brother, Wang Dong 6 in a black coat. His bike is 7 . Their friends 8 Jack and Mike. They are 9 . My teacher, Wang Dong and their friends are 10 home now. | ||||
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