A.點(diǎn)A的相對(duì)高程是253.440m B.點(diǎn)A的相對(duì)高程是323.383m C.點(diǎn)C的相對(duì)高程是198.499m D.點(diǎn)C的相對(duì)高程是698.794m E.A-B兩點(diǎn)的高差是246.855m
A.點(diǎn)A的相對(duì)高程是253.440m B.點(diǎn)A的相對(duì)高程是323.383m C.點(diǎn)C的相對(duì)高程是198.499m D.點(diǎn)C的相對(duì)高程是698.794m E.點(diǎn)A-B的高差是76.528m
A.附和導(dǎo)線具有檢核觀測(cè)成果和已知成果的作用 B.附和導(dǎo)線由于是附和形式,所以無(wú)法起到檢核作用 C.閉合導(dǎo)線本身具有嚴(yán)密的幾何條件,用于測(cè)區(qū)的首級(jí)控制 D.支線導(dǎo)線簡(jiǎn)便易行,總長(zhǎng)不受限制 E.支導(dǎo)線應(yīng)獨(dú)立測(cè)量?jī)纱?/p>