【单选题】以下CSS代码中,( )属于通配符选择器。
B.
#mytitle{font-size:14px;}
C.
oneclass{font-size:14px;}
【单选题】Hong Kong singer and actress Gigi Leung(梁咏琪)visited in mid-October some poor families in Inner Mongolia, ______ that her trip will ______ public awareness of problems faced by the children in poor are...
【判断题】只要系数矩阵一样,则非齐次和齐次方程组具有相同的基础解系.
【简答题】这件事长期以来一直让我放心不下。(mind)