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组成塑料的分子问间隙很小，汽油会源源不断地渗出塑料桶来; 汽油与塑料桶发生化学反应， 塑料桶将被熔化; 汽车运行中汽油和塑料不断发生摩擦 ，积累的电荷太多容易发生放电引起火灾; 塑料是热的良导体， 汽车运行要发热 ，热通过塑料桶传给汽油达到燃点会引起火灾.
塑料和汽油会起化学变化，使汽油变质 汽油会腐蚀塑料，造成漏油 汽油与塑料桶壁不断摩擦，使塑料桶带电产生火花放电，引燃汽油造成火灾 汽油与塑料桶壁不断摩擦，使塑料桶带电，人触桶外壳会造成触电伤害
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