单项选择题
A.25TB.30TC.35TD.40T
A.360mmB.380mmC.750mmD.730mm
A.360mmB.380mmC.750mmD.780mm
A.紧固器、垫脚、铁鞋和垫板B.紧固器、垫脚、铁鞋和铁板C.紧固器、垫脚、垫板D.紧固器、铁鞋和垫板
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