单项选择题
A.227.3±4mm B.226.3±5mm C.226.3±4mm D.225.3±5mm
A.3mm B.4mm C.5mm D.2mm
A.2700mm B.2800mm C.2750mm D.2650mm
A.再生制动 B.100KPA C.140KPA D.220KPA
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