摘要：下列做法容易发生危险的是·············································································· ( ) A.用石灰浆抹墙 B.用干冰制造舞台上的云雾效果 C.用火柴检查天然气是否泄漏 D.进入红薯和白菜的地窖前.先进行灯火实验

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