往返丈量直线AB的长度为:DAB=126.72m,DBA=126.76m,其相对误差为()。A、K=1/3100B、K=1/3500C、K=0.000315D、K=1/5100
往返丈量直线AB的长度为:DAB=126.72m,DBA=126.76m,其相对误差为()。
- A、K=1/3100
- B、K=1/3500
- C、K=0.000315
- D、K=1/5100
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