I'm very tired and I want to stop a rest.[ ]
A. having
B. to have
C. has
D. to having
答案:B
相同条件下,溶液的酸性越强,溶液中氢氧根离子物质的量的浓度(),氢离子物质的量的浓度()。
A.越大,越大
B.越小,越小
C.越大,越小
D.越小,越大
“自动核销”状态的业务包括面向账户的().
A.汇兑
B.托收
C.支票截留
D.进账单