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[单选题]
一肥料包装袋上印有12-12-12,表明该肥料含有()
A.12%N,12%P2O5,12%K2O
B.12%N,12%P,12%K
C. 12 N:12 P2O5:12 K2O
D.12%N2O,12% P2O5 ,12% K2O
提问人:网友zhengyytt
发布时间:2022-01-07
A.12%N,12%P2O5,12%K2O
B.12%N,12%P,12%K
C. 12 N:12 P2O5:12 K2O
D.12%N2O,12% P2O5 ,12% K2O
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