用金刚钻钻孔时要不断往钻头处浇水，这主要是为了解决摩擦_1带来的问题；干燥天气开启塑料袋，手往往会粘着塑料薄膜，这是摩擦_2引起的现象．_刷题宝

题干

用金刚钻钻孔时要不断往钻头处浇水，这主要是为了解决摩擦____带来的问题；干燥天气开启塑料袋，手往往会粘着塑料薄膜，这是摩擦____引起的现象．

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生热,起电

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