The friction due to air mass can be reduced by 

a

streaming

b

lubricating

c

propeller

d

polishing

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Explanation

Correct Option
a

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Discussions (5)

Monica08
2 months ago

wahala 😒😒😒😒😒😒😒😒😒

Monica08
2 months ago

wahala 😒😒😒😒😒😒😒😒😒

Ezehking1
2 months ago

this ans is contestable pls change your gramma

Ezehking1
2 months ago

this ans is contestable pls change your grammar

CBC1
4 months ago

L.A

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