單項(xiàng)選擇題設(shè)A為后視點(diǎn),B為前視點(diǎn),后視讀數(shù)為0.983m,前視讀數(shù)為1.149m,則A.B兩點(diǎn)的高差是()

A.0.166
B.-0.166
C.2.132


您可能感興趣的試卷