_ The valve overlap in four stroke petrol engines is approximately$? – McqOptions

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1.	_ The valve overlap in four stroke petrol engines is approximately$?
A.	30¬¨‚àû
B.	60¬¨‚àû
C.	90¬¨‚àû
D.	120¬¨‚àû
Answer» B. 60¬¨‚àû

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