单项选择题
生产车间所用的洗手消毒的浓度是?水靴消毒的浓度是?案面消毒所用的酒精浓度是?()
A.50PPM,100-200PPM,90%
B.100PPM,200-300PPM,75%
C.50PPM,200-300PPM,75%
D.50PPM,100-300PPM,90%
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