34***5zz6z197z198zzJ.B.z––9zzz10zz1112z13zz14z15z1)2)3)4)16z17z32118zz19z“”QP)Q(TR⋅=)L(fQ=)L(fPQP)L(TR⋅=⋅=20z“”dL)L(dfPdL)L(dTR⋅=LLMPPVMP⋅=21z“”zzMRP–VMP22z“”z––201816141210864222222222221098765432112345678910VMPL=MPL·PPMPLL232345678910LMPL,VMPLVMPLMPL11120161284012425z“”Lw)L(TC⋅=wdL)L(dTC=26z“”zzMFC–27w0wdLdTC(L)=0L28zwVMPL=29zVMPLwzzVMPL=w30zVMPLw31z=====)L(f)L(PwLπ32zLw)L(fP)L(⋅−⋅=π0wdL)L(dfPdL)L(d=−⋅=π33zwVMPMPPLL==⋅