在地理选择题中善用排除法。回答选择题是有技巧的。第一,注意事物的因果关系。有的问题要求你以结果推因,有的问题则以因推果;第二,采取排除法,从相反的方向思考问题。比如选择正确答案,可以排除那些错误明显的
I do have certificates in DER and PEM format, my goal is to retrieve the fields of Issuer and Subject and verify the certificate with the CA public key and simultaneously verify CA certificate with th