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【单选题】
断路器的分合闸线圈控制回路串入辅助开关接点的主要作用是( )。
A.
切断动作线圈回路,防止线圈长期带电而烧坏
B.
指示分合闸位置
C.
接通电机,让开关操作机构
D.
防止断路器偷合或偷跳
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