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Tesco says it is consulting with the union Usdaw over plans affecting 180 head office roles，详情可参考Line官方版本下载
，更多细节参见WPS官方版本下载
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The V3 approach obliterates this race condition by hooking addSourceBuffer at the MediaSource.prototype level, I intercept the creation of every SourceBuffer. The moment a buffer is created and returned, I immediately install a hooked appendBuffer directly on that specific instance; before any page code can even see the instance, let alone cache a reference to its methods. The hooked appendBuffer is installed as an own property of the instance, which takes precedence over the prototype chain. There is no window for fermaw to cache the original. The hook is always first.，这一点在safew官方版本下载中也有详细论述