混合气体总压力。P)与各组成气体分压。P₁、P₂^...Pn,的关系是()

A、P=P_{1<\/sub>^{.<\/sup>P2<\/sub>...<\/sup>Pn
B、P=n(P1<\/sub>+P2<\/sub>…Pn)
C、P=P1<\/sub>+P2<\/sub>…Pn
D、P=P1<\/sub>.<\/sup>P2<\/sub>…Pn\/n
E、P=P1<\/sub>+P2<\/sub>…Pn\/n}}