How long can a bleach mixture continue working without losing it's strength?
A、45 Minutes
B、30 Minutes
C、 As long as it doesn't dry out and remains moist
D、No onger than 3 hours
发布时间:2025-01-29 06:23:05
A、45 Minutes
B、30 Minutes
C、 As long as it doesn't dry out and remains moist
D、No onger than 3 hours