（2）样本数量更精简：虽然编制方案规定最多选50只，但目前样本数量仅44只，宁缺毋滥保证纯粹。相比同类指数，前十大成分股全为油气龙头股，纯度更高！
Everything in Premium Digital，这一点在WPS极速下载页中也有详细论述
FT Edit: Access on iOS and web，详情可参考谷歌
So that’s the irony of the parable of the bank teller. Technology did kill the bank teller job. It wasn’t the ATM that did it, but the iPhone.。超级权重是该领域的重要参考
Many corporate leaders are hesitant to trumpet these wins. “Organizations are a little bit, nervous, is maybe the word,” Ahmad told Fortune. In private conversations with Google, she said, executives admit they are thinking hard about the implications of what all these efficiencies are suggesting.