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【单选题】
计算机信息系统发生安全事故和案件,应当( )在内报告当地公安机关公共信息网络安全监察部门。
A.
8小时
B.
24小时
C.
36小时
D.
48小时
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举一反三
【单选题】With our country entering an aging society, ______ the retirement age is probably unavoidable.
A.
having delayed
B.
delaying
C.
being delayed
D.
to be delayed
【多选题】关于接线盒明装和暗装,说法正确的是
A.
接线盒镶嵌在墙里的是暗装
B.
接线盒外挂在墙面的是明装
C.
新建楼房接线盒一般是暗装
D.
新建楼房接线盒一般是明装
【单选题】____several times,but unfortunately,the boy still couldn’t smooth away the problem on his own.
A.
Having been explained
B.
The problem having been explained
C.
The problem had been explained
D.
Although the problem had been explained
【单选题】Anna was reading a piece of science fiction, completely ______ to the outside world.
A.
having been lost
B.
to be lost
C.
losing
D.
lost
【单选题】下面关于室内管道安装工程的一般施工顺序,不正确的是( )。
A.
先装地下,后装地上
B.
先装大管道,后装小管道
C.
先装支架、吊架,后装管道
D.
先装地上,后装地下
【单选题】(Having eaten) the cherry pie, I (struck) several pits and (nearly) (broke) a tooth.
A.
Having eaten
B.
struck
C.
nearly
D.
broke
【单选题】A few days after the interview, I received a letter _____ me admission to the university. [     ]
A.
having offered
B.
offered
C.
to be offered
D.
offering
【单选题】At last she left her house and got to the airport, only ______the plane flying away.
A.
having seen
B.
to have seen
C.
to see
D.
saw
【单选题】. _______from the operation, the patient was advised to stay in hospital for another two weeks.
A.
Having not fully recovered
B.
Being not fully recovered
C.
Not having fully recovered
D.
Not fully recovering
【单选题】Academic publishers try to yield higher profits by the following means EXCEPT______.
A.
having students buy new editions
B.
publishing a textbook series
C.
discouraging the use of used textbooks
D.
bullying small new publishers of textbooks
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