皮皮学，免费搜题
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【多选题】
使用氢氟酸，必须（ ）。
A.
使用搪瓷器皿
B.
使用玻璃器皿
C.
稀释时戴手套
D.
通风厨内稀释，皮肤接触后立即用大量流水作长时间彻底冲洗
E.
皮肤接触后立即用大量流水作长时间彻底冲洗
拍照语音搜题，微信中搜索"皮皮学"使用
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