皮皮学，免费搜题
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搜题
【单选题】
心脏电除颤的正确步骤是A.
放电、充电、关机
B.
充电、选择能量、放电
C.
选择能量、充电、放电
D.
开机、选择非同步、放电
E.
开机、充电、放电
拍照语音搜题，微信中搜索"皮皮学"使用
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