已知 n 阶方阵 A , B , C , D. 且 D=ABC 。若 D 可逆,则 A , B , C 均可逆
A.
正确
B.
错误
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举一反三
【简答题】A.The amount of the collected information. B.The originality of the idea put forward C.How well the paper is written. D.How early the paper is handed in.
【单选题】'Was the driving pleasant when you vacationed in Beijing last summer?''No, it ______ for four days when we arrived. So the roads were very muddy.'