【单选题】电位法测定溶液的pH常选用的指示电极为( )
【单选题】测定溶液pH值最常用的指示电极为玻璃电极,它是( )
【单选题】I think I was at school, ______ I was staying with a friend during the vacatizon when I heard the news.
【判断题】测定溶液pH时,pH计上使用的玻璃电极是指示电极,又是原电池的正极。( )
【单选题】--- When will you return to your hometown? ---__________.
A.
Not until the end of this month
【单选题】取得以下哪种法律文书,则代表持有者具备护士执业资格,可以从事护理专业技术活动()