单项选择题
A.220mm B.230mm C.240mm D.245mm
A.250Nm B.280Nm C.300NM D.350Nm
A.331L B.361L C.401L D.421L
A.10×3.5寸 B.10×2.5寸 C.8×2.5寸 D.12×3.5寸
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