2zzz4z5zVp=Vs=Cp=Cs=6zCpVpCszz–Cs-CpVp-Cp–MCpS=MCpIDP1PPMECMECIMECP1q1Q1MCsMCsIQ*Q1q*P*Q*q*q10078zVpCpVszz–Vs-VpCp-Vp–9MCP1QMBpq1MBSMBSDq*P*q*q10MEBMEBP10z1)“”“”11z2)12z3)131)z=z=-z=z=-142)“”z153)z163)z173)z18zz19z((MCMCpp))((MECMEC))MCMCss20z((MBMBpp))((MEBMEB))MBMBss21z22zzzzz23zzz2450010060030050080050020070030030060025z26z50020070027z300*200*28z250300+250=550500-250=25080029z3005008003031z20020050030032z3350030020050055030025050034z300300z