已转入久悬未取款帐户的客户不动户资金，满（）年应按照规定程序转入营业外收入科目核算。
A、1
B、2
C、3
D、5
参考答案：D
Don't go out ______ school nights because you have too much homework. [ ]
A. in
B. at
C. of
D. on
矿井主要通风机的效率一般不得低于（）%。
