静态成员函数可以直接访问类的【 】成员,不能直接访问类的【 】成员。
参考答案:静态
解析:静态成员函数可以直接访问该类中的静态数据成员,而不能访问该类中的非静态数据成员。
—I don't know why Denise started crying when I mentioned the wedding.
—It ______ what you said about her brother. Or, perhaps she is just nervous. [ ]
A. should have been
B. couldn't have been
C. could have been
D. must have been
巨噬细胞是由下列哪种细胞分化的:()。
A.间充质细胞
B.网状细胞
C.单核细胞
D.巨核细胞
E.中性粒细胞