[多选题]现测量了AB和CD两段距离,得DAB=125.34m,DBA=125.29m,DCD=236.56m,DDC=236.61m,求哪段距离测量的精度高?
正确答案 :BDE
D
D
D
解析:D`AB=1/2(125.29+125.34)=125.32mDCD`=1/2(236.56+236.61)=236.59mKAB=(│D│/DAB. =(│125.34-125.29│/125.32)=(0.05/125.32)=(1/2506)KCD=(│236.56-236.61│/236.59)=(0.05/236.59)=(1/4732)KABKCDAB段精度高。
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