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【多选题】
关于电接触的分类说法正确的是（ ）A.
电接触可分为点、线、面接触。
B.
电接触中面接触通过电流最大，因此多用于主干路。
C.
电接触的主要任务是：传导电流，保证电接触能长时间的可靠稳定地工作。
D.
触头接触是属于电接触中的可分和接触类型。
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举一反三
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