【简答题】求过两直线x-2y+4=0和x+y-2=0的交点,且分别满足下列条件的直线l的方程. (1)直线l与直线5x+3y-6=0垂直; (2)坐标原点与点A(1,1)到直线l的距离相等.
【单选题】The origin of Cold Food Day comes from the story of .
【单选题】What lesson can we learn from the story of Dennis ?
C.
It is no use crying over spilt milk.
D.
He who makes no mistakes makes nothing.
【单选题】标准曲线回归方程 表达式为 : y = bx + a 各子母表达的含义错误的是( )。
【判断题】A lesson to be learned from the story of the concept car is that the design and the manufacturing of a product can be done all at the same time.
【单选题】(1502-74)为了通过GUI接收用户输入数据以及获得用户输入的数据,可以采用下面哪种组件?( )
【单选题】A lesson to be learned from the story of the concept car is that the design and the manufacturing of a product can be done all at the same time.