A:由途径①和②分别制取1mol FeCl2,理论上各消耗1mol Fe,各转移2mol e-
B:由途径③和④分别制取1mol Na2SO4,理论上各消耗1mol Cl2,各转移2 mol e-
C:由途径⑤和⑥分别制取1mol H2SO4,理论上各消耗1mol S,各转移6mol e-
D:以上说法都不正确
The meeting l____ for three hours yesterday.