填空题
11
A.(∀x)(A(x)∧B(x))B.┐(∀x)(A(x)→B(x))C.(∃x)(A(x)∧B(x))D.┐(∃x)(A(x)∧┐B(x))
A.5B.10C.9D.12
微信扫一扫,加关注免费搜题