Bettinger强调：通过嘉信ETF OneSource在线购买ETF的嘉信客户将支付全完统一一致的运营开支比率（OERs），无需佣金。
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打开教育资源 ( OERs )是可以为教，学会，研究和其他目的使用的任意和 公开被准许的教材。
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This conference noted that open and distance learning, and specifically OERs, present opportunities to widen access to quality education.
UNESCO: MEDIA SERVICES
The Declaration calls on governments to support the sustainable development and dynamic use of OERs to achieve educational goals.
UNESCO: Communication and Information
OERs provide member states with a strong opportunity to increase the quality and access to education and facilitates knowledge sharing, dialogue, and capacity building.
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