当各边上的权值均相等时，BFS算法可以用来解决单源最短路径问题

多项选择题《中国石化综合加能站形象标准手册》秉承（）的品牌定位。

单项选择题Esperanto was created out of the universal hope of communication among people at the same neutral status, regardless of following things except ________. A、countries and cultures B、races or colors of skin C、mother tongues D、foreign languages