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【单选题】
以下用鼠标选定的方法，正确的是（）。A.
若要选定一个段落，则把鼠标放在该段落上，连续击三下
B.
若要选定一篇文档，则把鼠标指针放在选定区，
C.
选定一列时，Alt+鼠标指针拖动
D.
选定一行时，把鼠标指针放在该行中，
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举一反三
【单选题】In a certain cache system, the modified cache block is written to main memory only when the block is replaced. All of the following are used to describe this policy EXCEPT(71).
A.
store-in
B.
copy-back
C.
write-back
D.
write-through
【多选题】The speed of the memory system affects the designer’s decision on the size of the cache block. Which of the following cache designer guidelines are generally valid?
A.
The shorter the memory latency, the smaller the cache block
B.
The shorter the memory latency, the larger the cache block
C.
The higher the memory bandwidth, the smaller the cache block
D.
The higher the memory bandwidth, the larger the cache block
【单选题】In a certain cache system, the modified cache block is written to main memory only when the block is replaced.All of following are used to describe this policy EXCEPT
A.
store-in
B.
write-back
C.
copy-back
D.
write-through
【单选题】In a certain cache system, the modified cache block is written to main memory only when the block is replaced. All of the following are used to describe this policy EXCEPT(16).
A.
store-in
B.
copy-back
C.
write-back
D.
write-through
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