【題目】人類生產(chǎn)、生活與溶液關(guān)系十分密切，下列說法正確的是（ ）

A．一種溶液中只能含一種溶質(zhì)

B．凡是無色、透明的液體都是溶液

C．室溫下的一瓶食鹽水，其底部密度大于上部

D．溶液一定是均一、穩(wěn)定的混合物

【答案】D

【解析】一種溶液中可以含有多種溶質(zhì)，A錯(cuò)誤；蒸餾水是無色、透明的液體，但不是溶液，B錯(cuò)誤；溶液是一種穩(wěn)定、均一的混合物，各部分密度是一樣的，C錯(cuò)誤，D正確．

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