A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（） Ⅰ.gap Ⅱ.side<br>A:Ⅰonly<br>B:Ⅱ only<br>C:both Ⅰ and Ⅱ<br>D:neither Ⅰ nor Ⅱ

A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（） Ⅰ.gap Ⅱ.side
A:Ⅰonly
B:Ⅱ only
C:both Ⅰ and Ⅱ
D:neither Ⅰ nor Ⅱ

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