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【单选题】
用标准的盐酸溶液滴定未知浓度的 NaOH 溶液时,下列操作中,无误差的是:A.
用蒸馏水洗净酸式滴定管后，注入标准溶液盐酸进行滴定
B.
用蒸馏水洗涤锥形瓶后，再用 NaOH 溶液润洗，而后装入一定体积的 NaOH 溶液进行滴定
C.
用碱式滴定管量取 10.00mLNaOH 溶液放入用蒸馏水洗涤的锥形瓶中，再加入适量蒸馏水和 2 滴甲基橙试液后进行滴定
D.
若改用移液管取待测 10.00mLNaOH 溶液放入锥形瓶后，把留在移液管尖嘴处的液体吹入锥形瓶内，再加入 1mL 甲基橙指示剂进行滴定
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举一反三
【单选题】Is it with its charming scenery and a unique culture ________ Lugu Lake impresses people from all over the world?
A.
that
B.
which
C.
where
D.
why
【判断题】Philadelphia is considered one of America’s most charming cities after it rebuilt its old central area.
A.
正确
B.
错误
【简答题】With its charming picture, touching plots and beautiful music, the movies struck a chord with the young audience.
【单选题】Is it with its charming scenery and a unique culture ________ Lugu Lake impresses people from all over the world?
A.
where
B.
which
C.
that
D.
why
【判断题】When seeing the gorilla, the author was so absorbed in its charming appearance that he forgot to use his binoculars.
A.
正确
B.
错误
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