In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）<br>A:wide compression rings are used<br>B:oil rings are located above the piston<br>C:chromium plating is used on all piston rings<br>D:oil rings are located near the bottom of the piston skirt

In order to keep excess oil from the intake ports in two-stroke/cycle diesel engines, （）
A:wide compression rings are used
B:oil rings are located above the piston
C:chromium plating is used on all piston rings
D:oil rings are located near the bottom of the piston skirt

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