問(wèn)答題設(shè)地面上A、B兩點(diǎn),A為后視點(diǎn),B為前視點(diǎn),A點(diǎn)高程為66.429(19.574)m,后視讀數(shù)為2.312(1.334)m,前視讀數(shù)為2.628(1.785)m,計(jì)算:AB兩點(diǎn)的高差?A點(diǎn)與B點(diǎn)哪點(diǎn)高?B點(diǎn)高程為多少?視線高程為多少?

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