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问题:

(3分)(1)用pH试纸测定液体的pH时,所需用品除玻璃片、pH试纸外,还需要______________;

(3分)

(1)用pH试纸测定液体的pH时,所需用品除玻璃片、pH试纸外,还需要______________;


  参考答案

正确答案:
(1)玻璃棒

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