这里填whether
the problem whether the quality of the products from that factory is up to standard has not been solved
那个工厂的产品的质量是否取决于这一标准还是一个没有解决的问题
whether the quality of the products from that factory is up to standard 是一个同位语从句 解释说明the problem
其实整个句子简化一下 就是the problem has not been solved 这个问题还没解决