問題詳情
15.編號1到5的五支試管分別為不同的實驗裝置,每支試管皆裝有等量的水,如下圈所示。若要研究「根的有無」和「蒸散作用的速率」之關係,下列何種組合可作為此實驗設計的實驗組與對照組?
(A)編號1和2
(B)編號1和3
(C)編號2和4
(D)編號4和5。
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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