A.X1dlnγ1/dX1+X2dlnγ2/dX2=0 B.X1dlnγ1/dX2+X2dlnγ2/dX1=0 C.X1dlnγ1/dX1+X2dlnγ2/dX1=0 D.X1dlnγ1/dX1–X2dlnγ2/dX1=0
A.與外界溫度有關 B.與外界壓力有關 C.與外界物質有關 D.是該物質本身的特性
A. 0 B. 1 C. 2 D. 3