【单选题】【消耗次数：1】
水浴锅在使用过程中，以下哪项操作是正确的？（ ）
①
A、可以随时添加大量水
②
B、保持水面低于加热元件
③
C、使用完毕后立即关闭电源
④
D、不需要监控水温变化
参考答案：
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