例1如图1所示,点Q表示蜜蜂,它从点P出发,按照着箭头所示的方向沿P→A→B→P→C→D→P的路径匀速飞行,飞行路径是一个以直线l为对称轴的轴对称图形,在直线l上的点O处(点O与点P不重合)利用仪器测量了∠POQ的大小.设蜜蜂飞行时间为x,∠POQ的大小为y,下列图象中,能表示y与x的函数关系的图象大致是() Example 1 As shown in Fig. 1, point Q represents a bee which starts at point P and travels at a uniform velocity along the path of P → A → B → P → C → D → P in the direction of the arrow. The flight path is a The straight line l is the axisymmetric graph of symmetry axis, and the size of ∠POQ is measured by the instrument at the point O on the straight line l (the point O does not coincide with the point P.) Suppose the flying time of the bee is x, the size of ∠POQ is y, In the following images, the image that can represent the functional relationship between y and x is roughly ()