【单选题】8 / 10已知两端点高差真值为+1.200 m+1.200\,\mathrm{m}+1.200m,观测∑h=+1.212 m+1.212\,\mathrm{m}+1.212m,则fhf_hfh为?A+0.012 m+0.012\,\mathrm{m}+0.012m正确B−0.012 m-0.012\,\mathrm{m}−0.012mC+1.200 m+1.200\,\mathrm{m}+1.200mD000参考答案A参考解析fh=1.212−1.200=+0.012 mf_h=1.212-1.200=+0.012\,\mathrm{m}fh=1.212−1.200=+0.012m。