电池Ag(s)|AgNO<sub>3</sub>(γ<sub>±,1</sub>,m<sub>1</sub>)||AgNO<sub>3</sub>(γ<sub>±,2</sub>,m<sub>2</sub>)|Ag(s)的电动势E应为:()<br /> <img src="https://nimg.ppkao.com/2019-04/hutao/2019042514100150471.jpg?sign=8b4849425a7ec97fc9fab07bfd7018b3&t=62d5dac0" />
A、A
B、B
C、C
D、D