证明:前提: x(C(x)W(x)∧R(x)), x(C(x)∧Q(x)).结论: x(Q(x)∧R(x)). 证明:前提: x(C(x)W(x)∧R(x)), x(C(x)∧Q(x)).结论: x(Q(x)∧R(x)). 发布时间:2025-08-02 10:18:12