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【简答题】
何为按序分配资源策略 ?请简单说明该策略能防止死锁的原因。
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举一反三
【单选题】I have known him for ten years. I ___ to know him in 2010.
A.
got
B.
have got
C.
was getting
D.
get
【简答题】I have known him _________ he was a boy of eight years
old.A. when B. since C. before D. while
【简答题】混凝土输送泵可分为( )和( )两类。
【单选题】Now he is artist . I have known him since he was one- year-old boy .
A.
a, an
B.
a, a
C.
an, an
D.
an, a
【单选题】I have known him for ten years. I ____________to know him in l999.
A.
got
B.
have got
C.
was getting
D.
get
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