問題詳情
15. 下列哪個實驗可以證明「人呼出的氣體中含有水」？
(A)對澄清石灰水呼氣，石灰水變混濁
(B)以錐形瓶收集人呼出的氣體，將點燃的線香伸入瓶內後發現線香熄滅
(C)對著清水呼氣數分鐘，以石蕊試紙測試水，發現試紙變粉紅色
(D)對乾燥的氯化亞鈷試紙呼氣，發現試紙由藍變粉紅
(A)對澄清石灰水呼氣，石灰水變混濁
(B)以錐形瓶收集人呼出的氣體，將點燃的線香伸入瓶內後發現線香熄滅
(C)對著清水呼氣數分鐘，以石蕊試紙測試水，發現試紙變粉紅色
(D)對乾燥的氯化亞鈷試紙呼氣，發現試紙由藍變粉紅
參考答案
答案：D
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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