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【单选题】
可变分区管理作业需求量分配主存分区,所以( )。A.
分区的长度是固定的
B.
分区的个数是确定的
C.
分区的长度和个数都是确定的
D.
分区的长度不是预先固定的，分区的个数也不是确定的
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【简答题】If computer has been affected by virus,you should scan the system and clean out the affectedfiles.
【单选题】Europe has achieved more in controlling the AIDS virus than Asia in the past ten years, ________ the number of people infected with the virus is going up sharply.
A.
when
B.
that
C.
so that
D.
where
【简答题】My computer has just (attack) ______ by an unknown virus.
【简答题】The HIV virus has caused more deaths in developed countries.
【单选题】What kind of virus do you think Jenny has got?
A.
human immunodeficiency virus(HIV)
B.
cold virus
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