【单选题】10 / 45倾斜改正近似式为?Ah/(2D)h/(2D)h/(2D)B−h2/(2D)-h^{2}/(2D)−h2/(2D)正确C2D/h22D/h^{2}2D/h2DD2/(2R)D^{2}/(2R)D2/(2R)参考答案B参考解析−h2/(2D)-h^{2}/(2D)−h2/(2D)。