我国资金清算体系包括()。
A.中国现代化支付系统
B.商业银行系统内资金汇划与清算系统
C.票据交换系统
D.银行卡清算系统
E.外币清算系统
参考答案:A, B, C, D, E
用惰性电极电解Fe2(SO4)3和CuSO4的混合溶液,且已知Fe2(SO4)3+Cu=2FeSO4+CuSO4,下列说法正确的是( )
A.阴极反应式为:Cu2++2e-═Cu,当有Cu2+存在时,Fe3+不放电
B.阴极上首先析出铁,然后析出铜
C.阴极先是Fe3+放电,后Cu2+放电
D.阴极上不可能析出铜
完成对话。
A: Could you come and __1__ me, please?
B: OK,I'm coming. What's wrong?
A: I want __2__ do my homework here. But there is a big box __3__ my desk. Could you help me get it
down?
B: Certainly. Oh, dear! It's very heavy. What's in it?
A: There're some bottles in it, I __4__ .
B: Is there __5__ food to eat?
A: Let's open it and see.
B: Ah! It's full of bottles of orange.