的充分必要条件是()。 - 高等数学(工专)(00022) - 专业知识收录平台"> 的充分必要条件是()。 - 高等数学(工专)(00022) - 专业知识收录平台">
的充分必要条件是()。
A.k≠-1
B.k≠-6
C.k≠-6且k≠1
D.k≠-6或k≠-1
正确答案是C
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