A.細(xì)粒土>含有機(jī)質(zhì)土>砂類土 B.含有機(jī)質(zhì)土>細(xì)粒土>砂類土 C.細(xì)粒土>砂類土>含有機(jī)質(zhì)土 D.含有機(jī)質(zhì)土>砂類土>細(xì)粒土
A.24 B.48 C.72 D.96
A.2 B.5 C.10 D.15