A.100%>ω>0% B.100%≥ω≥0% C.ω≥0% D.ω>0%
A.有機質(zhì)小于10%的土 B.有機質(zhì)小于5%的土 C.有機質(zhì)超過10%的土 D.有機質(zhì)小于8%的土
A.0.1g B.0.01g C.0.001g D.1.0g