【单选题】下列说法中 ①一个角的两边分别垂直于另一角的两边,则这两个角相等 ②数据5,2,7,1,2,4的中位数是3,众数是2 ③若点A在y=2x-3上,且点A到两坐标轴的距离相等时,则点A在第一象限; ④半径为5的圆中,弦AB=8,则圆周上到直线AB的距离为2的点共有四个。 正确命题有( ▲ )
【单选题】“Make yourself _ and help yourself to some candy .”Mary said to me.
【单选题】“Make yourself _ and help yourself to some candy .”Mary said to me.
【单选题】在四行程发动机中, 不属于 辅助行程( )
【简答题】任务型阅读. Lucy: Hi, Mary Nice to meet you! I have some questions to ask you! Can you help me? Mary: OK, I'd like to. Tell me! Lucy: I get up early every morning and I eat in school. Can I eat in our clas...
【简答题】电力变压器的正常过负荷与以下两个因素有关: 1 ) 、 2 )
【单选题】第一象限的点 到直线 的距离等于4,则 的值等于( ).