【单选题】China’s reforms have brought() (活力) to its economy.
【判断题】射线只有一个端点,射线不能度量长度。( )
【判断题】矩阵A,B都是m乘n矩阵则矩阵A等价于矩阵B的充要条件是存在m阶可逆P及n阶可逆阵Q使得PAQ=B.
【判断题】回避制度只适用于双方当事人,不适用于审判员。( )
【判断题】Reforms have brought about rapid econimic growth in China in recent years.
【单选题】设 是 矩阵 则以下关于矩阵 的叙述正确的是( )
【单选题】Reforms have brought about rapid ____ growth in China in recent years.