单项选择题X 纠错
A.300mm B.400mm C.200mm D.500mm
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单项选择题
A.500~600mm B.400~500mm C.400~600mm D.550~650mm
A.200~400mm B.300~500mm C.100~300mm D.250~450mm
A.450mm B.375mm C.400mm D.350mm
A.100m B.150m C.100~200m D.200m
A.500mm B.450mm C.550mm D.400mm
A.大于2000 B.可适当缩短 C.可适当加长 D.小于2000m
A.1800m B.1900m C.2000m D.1700m
A.200km/h B.250km/h C.150km/m D.100km/h
A.200mm B.300mm C.400mm D.100mm
A.100mm B.200mm C.300mm D.150mm
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