小额支付系统定时借记支付业务包括的业务种类有()。
A.代收水、电、煤气等公用事业费用业务
B.个人储蓄通兑业务
C.国库批量扣税业务
D.国库实时扣税业务
参考答案:A, C
It doesn't matter if they want to come to your party, ________?[ ]
A. doesn't it
B. does it
C. don't they
D. do they
吊钩发生落地事故的原因有哪些?