单项选择题
缓和曲线采用切线支距法计算坐标的公式为()
- A.y=ι3-ι5/(336R3I03)+ι11/(42240R5I05)…  
B.y=ι3-ι6/(336R3I03)+ι11/(42240R5I05)…
C.y=ι3-ι7/(336R3I03)+ι11/(42240R5I05)…
D.y=ι3-ι8/(336R3I03)+ι11/(42240R5I05)…
                    
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 缓和曲线采用切线支距法计算坐标的公式为()
 A.x=ι-ι4/(40R2I02)+ι9/(3456R4I04)… 
 B.x=ι-ι5/(40R2I02)+ι9/(3456R4I04)…
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 缓和曲线的弦长计算公式为()
 A.ι×(1-ι4/(πR2I02)) 
 B.ι×(1-ι3/(90R2I02))
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                                    单项选择题
                                    
 缓和曲线的弦切角计算公式为()
 A.30×ι2/(πRI0) 
 B.60×ι2/(πRI0)
 C.90×ι2/(πRI0)
 D.180×ι2/(πRI0)
 
             
             
                
            