17.
如图,点P是抛物线y=$\frac{1}{4}$x2+1上在第一象限内的点,线段PO交抛物线于点C,PB⊥x轴于点B,点A的坐标是(0,2),当点C是OP的中点时,下列说法错误的是( )
0 283062 283070 283076 283080 283086 283088 283092 283098 283100 283106 283112 283116 283118 283122 283128 283130 283136 283140 283142 283146 283148 283152 283154 283156 283157 283158 283160 283161 283162 283164 283166 283170 283172 283176 283178 283182 283188 283190 283196 283200 283202 283206 283212 283218 283220 283226 283230 283232 283238 283242 283248 283256 366461
| A. | PA=PB | B. | ∠POB=45° | C. | PA=2AC | D. | PB=3 |