如下图所示的装置，C、D、E、F、X、Y都是惰性电极。将电源接通后，向(乙)中滴入酚酞溶液，在F极附近显红色。则以下说法正确的是 
A．电源B极是正极
B．（甲）、（乙）装置的C、D、E、F电极均有单质生成，其物质的量之比为1 : 2 : 2 : 2
C．欲用（丙）装置给铜镀银，H应该是Ag，电镀液是AgNO3溶液
D．装置（丁）中Y极附近红褐色变深，说明氢氧化铁胶粒带负电荷
相关试题
Jenny nearly missed the flight______ doing too much shopping.
| A．as a result of | B．on top of | C．in front of | D．in need of |
The CDs are on sale! Buy one and you get ______ completely free.
| A．other | B．others | C．one | D．ones ks |
Progress______ so far very good and we are sure that the work will be finished on time.
| A．was | B．had been | C．has been | D．will be |
Charles was alone at home, with_______ looking after him.
| A．someone | B．anyone | C．not one | D．no one |
粤公网安备 44130202000953号