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(重庆)某同学用pH试纸测定溶液的酸碱度,下列操作或结论正确的是( )

A.用pH试纸直接沾取待测溶液
B.先用水润湿pH试纸再测定溶液的酸碱度
C.用pH试纸测得石灰水的pH=5
D.用pH试纸测得盐酸的pH=1
科目 化学   题型 选择题   难度 中等
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