問題詳情
25.( )農夫將收割後留在田裡的稻草燒成灰，當作肥料，又可以中和土壤的酸鹼性，稻草灰中可以作肥料，又可以中和土壤酸鹼性的成分是什麼？
(A)氯化鈉
(B)碳酸鉀
(C)硫酸鈉
(D)氯化鉀。
(A)氯化鈉
(B)碳酸鉀
(C)硫酸鈉
(D)氯化鉀。
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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