1 . 某物理兴趣小组学习了导体电阻的知识后,对食盐水溶液的导电性能与什么因素有关进行了探究,他们设计了如图所示的装置,将电路中的,两金属片分别插为甲、乙溶液中所示的位置进行探究:
根据图示过程请你写出他们探究的问题是:______________________________ 。
根据图示过程请你写出他们探究的问题是:
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2 . 如图所示的是常温下多种物质的导电和绝缘能力的排列顺序,从图中可以看出:
(1)________________________________________________________________________
________________________________________________________________________;
(2)________________________________________________________________________
________________________________________________________________________;
(3)________________________________________________________________________
________________________________________________________________________.
(1)________________________________________________________________________
________________________________________________________________________;
(2)________________________________________________________________________
________________________________________________________________________;
(3)________________________________________________________________________
________________________________________________________________________.
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