防病毒软件代码要定期更新,要求每()周进行一次病毒代码库的更新工作,()个月进行一次主控代码的更新工作。
A.1,1
B.2,1
C.1,2
D.1,3
参考答案:A
It was desired that the project ______ before the end of this month.
A.would be finished
B.was to be finished
C.be finished
D.was going to be finished
由于塔底结焦或泵入口堵塞造成的油浆泵抽空,则应请示切断进料或停工处理。