在平面直角坐标系:xOy中,设A、B、C是圆x2+y2=1上相异三点,若存在正实数λ,μ,使得OC→=λOA→+μOB→,则λ2+(μ﹣3)2的取值范围是( )
—We'll________you forever by your side as your fans.
—Thank you.And I won't let you down.
下列关于淀粉和纤维素的叙述中,不正确的是( )