[名词解释] 记忆

简述特别自首的概念和成立条件。 引起肛瘘的最常见原因是（） ["肛周脓肿","内痔","结核","肛裂","肠道炎性疾病"] 诊断急性心肌梗死特异性最好的指标是（） ["CK-MB","Mb","CK","cTnI","AST"] 卷帘式煤气柜的密封介质是（）。 ["水","矿物油","密封垫圈","橡胶密封帘"] 测定车间空气中氯气时，配制标准溶液选用（） ["氯化钠","漂白粉","氯气","氯化钾","溴酸钾"] 记忆