单项选择题
A.5.6ppm;1h;2天/次 B.5.6ppm;2h;3天/次 C.20ppm;1h;2天/次 D.20ppm;2h;3天/次
A.一次性餐盒 B.公用餐具 C.个人餐具
A.60℃15min、85℃5min B.60℃30min、85℃5min C.60℃30min、85℃10min D.60℃15min、85℃10min