滤油器是用来的。()
A、过滤油中杂质;
B、分离油中水分;
C、稳定油压;
D、减少压力损失。
参考答案:A
— Why isn't Cathy here yet?
— She _____ to be picked up at the station. [ ]
A. could wait
B. must wait
C. might be waiting
D. can be waiting
拨付周转金、应收款项、预付款项等账户至少()核对一次.
A、每周
B、每月
C、每季
D、每半年