已知在某特定条件下材料 A 与铂配对的热电势为 13.967 mV ,材料 B 与铂配对的热电势是 8.345 mV ,则在此特定条件下,材料 A 与材料 B 配对后的热电势为( )
A.
5.622
B.
6.622
C.
7.622
D.
8.622
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