单项选择题

A.0.5%过氧乙酸或500-1000mg/L含氯消毒剂擦拭
B.1mol/L氢氧化钠作用60min
C.10000mg/L含氯消毒剂至少作用15min
D.100mg/L含氯消毒剂至少作用60min