It consists of a more restrictive list of standards to validate the KDC's certification, primarily it demands a KDC certificate by having an EKU of “KDC Authentication” (see alternative b. higher than). 雅思考试和四六级应试考试不同，主要是能力型考试，主要考察，解题+科目能力+词汇+语法+逻辑，所以四、六级基础差的也不用担心。 知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世... https://knox80996.answerblogs.com/36029558/the-fact-about-雅思证书电子版-that-no-one-is-suggesting