【多选题】
下列说法正确的是___。
A. 进入易燃、易爆区域应当着防静电内外衣、裤子、袜子和手套
B. 进入有毒、缺氧区域时，必须佩戴空（氧）气呼吸器，着相应的防护服装
C. 处置压缩、液化气体泄漏事故时，必须采取防冻措施
D. 进入有核放射危险的区域时，必须着防化服装
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