Since fuse elements are made of zinc or any alloy of tin and lead, the melting point of the fuse element must be ().

A . higher than that of copper B . lower than that of copper C . equal to that of copper D . reached when the conductor it is protecting becomes "white hot&quot

时间:2022-10-12 20:07:03 所属题库:船舶电气与船舶安全题库

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