萘醌化合物从结构上考虑可以有α(1,4)、β(1,2)及amphi(2,6)三种类型,但迄今为止从天然界得到的几乎均为___________。
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A really important product such as iPhone changes everything, so many consumers camp out to buy it firstly.
iPad witnessed the booming of tablet computer industry, which also made Apple the NO.1 company.
Produced with technical skills and design concepts, Apple II sold better than Apple I.
We have had the good luck to have know Steve Jobs and to have worked with him.Now Steve has passed away, and we have lost a good friend and spiritual guide who greatly encouraged us.