Could you please ______ loudly in the library?

A．don’t talk

B．don’t say

C．not to talk

D．not talk

存款人开立单位银行结算账户，自正式开立之日起（）工作日内，除资金转入和现金存入外，不能办理付款业务。

A.3天

B.5天

C.10天

D.15天