A.MR = MC B.P = MC C.AR = MC D.AR=AC E.TR=TC
A.SMC=SMR=SAC=SAR B.MR=LMC=SMC C.MR=AR=MC=AC D.MR=LMC=SMC=LAC=SAC E.P=LMC=LAC=SMC=SAC
A. 对 B. 错
A.向右下方倾斜的 B.向右上方倾斜的 C.垂直的 D.水平的