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【简答题】
进行数据库系统的物理结构设计时，数据的存储结构有三种选择方式，分别是顺序存放、杂凑存放（或称散列存放、Hash存放）和 【】 。
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反馈参考答案：
举一反三
【简答题】x 2 (y'+y 2 )=2．
【简答题】Americans eat ________ as they actually need every day. A) twice as much protein B) twice protein as much twice C) twice protein as much D) protein as twice much
【简答题】GMP对制药设备验证有哪些规定?
【单选题】What do experts say about American diet?
A.
Americans eat too many vegetables.
B.
Americans should eat more beef.
C.
Fatty beef is good for us.
D.
Americans eat too much beef.
【简答题】GMP对制药设备验证有哪些规定？
【单选题】Americans eat ______ vegetables per person today as they did in 1910.
A.
more than twice
B.
as twice as many
C.
twice as many as
D.
more than twice as many
【单选题】― It is reported that Americans eat too much protein each day. ―They eat ______as they actually need.
A.
as twice much
B.
much as twice
C.
as much twice
D.
twice as much
【单选题】touch -m ex2 所实现的功能是 。
A.
仅改变文件ex2的修改时间
B.
仅改变文件ex2的保存时间
C.
仅改变文件ex2的创建时间
D.
仅改变文件ex2的根用户修改时间
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