问题：
[单选题]在 电 动 机 的 继 电 器 接 触 器 控 制 电 路 中，热 继 电 器 的 功 能 是 实 现（ ）。
A、短 路 保 护
B、零 压 保 护
C、过 载 保 护
参考答案：
C
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