下列实验操作均要用玻璃棒,其中玻璃棒作用相同的是 ① 过滤   

下列实验操作均要用玻璃棒,其中玻璃棒作用相同的是

 ① 过滤       ② 蒸发       ③ 溶解       ④ 向容量瓶转移液体

A.①和②    B.①和③   C.③和④   D.①和④

答案

D

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