A.高B.低C.縱D.橫
A.水準(zhǔn)標(biāo)尺長(zhǎng)度誤差改正B.正常水準(zhǔn)面不平行改正C.水準(zhǔn)路線閉合差改正D.重力改正
A.應(yīng)變計(jì)組B.多點(diǎn)位移計(jì)C.基巖應(yīng)變計(jì)D.錨桿應(yīng)力計(jì)