单选题The （） of the gravity disc is too big It causes oil to flow through the water outletWe changed the disc and no oil is found in the water outlet.AgravityBdiameterCcircumferenceDcylinder
单选题
The （） of the gravity disc is too big It causes oil to flow through the water outletWe changed the disc and no oil is found in the water outlet.
A
gravity
B
diameter
C
circumference
D
cylinder
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解析：
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