單項(xiàng)選擇題

When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?()
Ⅰ.filtering
Ⅱ.settling

A.Ⅰ only
B.Ⅱ only
C.either Ⅰ or Ⅱ
D.neither Ⅰ or Ⅱ

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