Question

for what time we can use a surgical mask ? a)3 to 4hrs b)6to 8 hrs c)12to15 hrs d)24 hrs​

Answer 1

⠀⠀⠀⠀⠀hello mate

⠀⠀⠀⠀⠀⠀ answer

a). 3 to 4hrs

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Answer 2

( a ) 3 to 4 hours

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