单项选择题
A.100kPa B.150kPa C.200kPa D.300kPa
A.0.1～0.2mm B.0.2～0.25mm C.0.25～0.5mm D.0.5～0.6mm
A.420MPa B.450MPa C.460MPa
A.固定轴距 B.全轴距 C.车辆定距
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