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15. 铜锌电池的电池符号为(): (1分)
A
A(-)Zn│ZnSO4(C1)║CuSO4(C2)│Cu(+)B(+)Zn│ZnSO4(C1)║CuSO4(C2)│Cu(-)C(-)Zn│CuSO(C1)║ZnSO44(C2)│Cu(+)
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C
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