A、VW; B、UW; C、XZ; D、XY;
A、“N”; B、“O”; C、“%”; D、“P”;
A、從當(dāng)前點(diǎn)經(jīng)(29,30,39)返回參考點(diǎn); B、從當(dāng)前點(diǎn)返回到點(diǎn)(29,30,39); C、從當(dāng)前點(diǎn)經(jīng)參考點(diǎn)返回到點(diǎn)(29,30,39)