单项选择题
A.200~300mm B.200~400mm C.300~500mm D.300~600mm
A.5% B.8% C.10% D.15%
A.桩体与桩间土所受的剪力之比 B.桩体与桩间土所承担的荷载之比 C.桩体与桩间土应分担的荷载之比 D.桩体与桩间土应力之比