A has been caused
B had been caused
C will be caused
D will have been caused
第1题:
A. has been caused
B.have been caused
C.will be caused
D.will have been caused
第2题:
He told me that he ____ in Naples the previous year.
A、has been working
B、has worked
C、had been working
D、had been worked
第3题:
A、it not have been
B、is not been
C、had it not been
D、has not been
第4题:
They()since last night. They are about to finish the work.
A. are cleaning the system
B. have been cleaning the system
C. had cleaned the system
第5题:
If only it ()so cold, perhaps I, too, ()more initiative.
A、had been,have shown
B、have been,would show
C、had’t been,cound't have shown
D、had't been,could have shown
第6题:
Had Paul received six more votes in the last election, he ________ our chairman now.
[A] must have been
[B] would have been
[C] were
[D] would be
第7题:
Loss or damage caused by cutting away wreck or parts of the ship which have been previously carried away or are effectively lost by accident shall not be made ______ as general average.
A.firm
B.sure
C.good
D.fair
第8题:
______the survivors know more of how to cope with cold water in the sinking of MV Titanic in 1912 countless lives ______.
A.Have / could have been saved
B.Have / could have saved
C.Had / could has saved
D.had / could have been saved
第9题:
第10题:
The work()by the time you get there.
第11题:
she realized
she had realized
had she realized
did she realize
第12题:
On Wednesday, the statistics have been purged.
On Wednesday, the retention period has been set to zero.
On Wednesday, the collection interval has been set to zero.
On Wednesday, the collection level has been changed to All.
On Wednesday, the retention period has been set to one day.
On Wednesday, the retention period has been set to two days
On Wednesday, the collection level has been changed to Typical.
On Wednesday, the collection interval has been set to 1440 minutes.
第13题:
A、pay
B、paid
C、had paid
D、would have paid
第14题:
A、have gone
B、have been gone
C、be gone
D、be going
第15题:
A had been; have seen
B have been; have seen
C had been; had seen
D have been; had seen
第16题:
The goods ()shipped already if your L/C had arrived by the end of December last.
A、would be
B、must have been
C、had been
D、would have been
第17题:
A.has been sent
B.was sent
C.had been sent
D.was being sent
第18题:
Apart from special circumstances,the value of the goods for which compensation must be made,if they have been lost or damaged,______ that which they would have had at the time and place at which they ought to have been delivered in proper condition.
A.contains
B.remains
C.has
D.is
第19题:
The ship ______ on a low rock was broken in two by the waves.
A.That had been driven
B.Had been driven
C.Have been driven
D.Which to have been driven
第20题:
第21题:
第22题:
Initially, for the Automatic Workload Repository (AWR) statistics, the retention period is set to 7 days, the collection interval is set to 30 minutes and the collection level is set to Typical in your production database. You have been using the Memory Advisor for the last three months to generate recommendations for tuning memory components. However, when you observe the Memory Advisor on a Friday, you find that the statistics are available only for two days, Thursday and Friday, of that week. What would have caused the statistics to be removed?()
第23题:
contains
remains
has
is