A.99.998m B.99.992m C.99.996m D.100.004m
A.±6 B.±10 C.±8 D.±14
A.前后視點(diǎn)高度取決于儀器高 B.前后視點(diǎn)等高 C.后視點(diǎn)比前視點(diǎn)高 D.后視點(diǎn)比前視點(diǎn)低