已知x=1是一元二次方程x2-2mx+1=0的一个解,则m的值为( )
A:1
B:0
C:0或1
D:0或-1
如图表示一定质量氯酸钾和二氧化锰受热过程,某变量y随加热时间的变化趋势,纵坐标表示的是( )
扩句。
①旅客们走进车厢。
②白医天使工作。
— My dream is to build university on the moon some day.
— It sounds like unusual dream. I wish you could realize it.
—What will the phone ?
—The same as you said, eight hundred dollars each.
使x-1有意义的x的取值范围是( )