• 2022-06-06
    N doping can significantly shorten the band gap of TiO2.
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      If a word in a sentence can be replaced by a conclusion marker without significantly changing the meaning of the sentence, then the word is used as a conclusion marker in that sentence.

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      Complaints can occur when there is a gap between what a customer expects and what a customer receives.

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      have a(n) ___________ influence on his life A: principle B: band C: athlete D: crucial

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      The gap generated by hydrolysis of mismatch site in replication can be repaired by DNA polymerase I in E. coli.()

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      Multi-cropping is the intensification of ( ), space and resources, which can significantly increase land productivity. A: time B: system C: animal force D: climate