—_____, but I really have to go.
A:Never mind
B:I'd love to
C:Pleased to meet you
D:I can't find any reason
下列词语书写有误的一项是( )
图中是抛物线拱桥,P处有一照明灯,水面OA宽4m,从O、A两处观测P处,仰角分别为α、β,且tanα= 12 , tanβ=32 ,以O为原点,OA所在直线为x轴建立直角坐标系.