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【单选题】
数据库的物理设计是为一个给定的逻辑结构选取一个适合应用环境的什么过程，包括确定数据库在物理设备上的存储结构和存取方法A.
逻辑结构
B.
物理结构
C.
概念结构
D.
层次结构
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A.
accept
B.
accepted
C.
to accept
D.
are accepting
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A.
never
B.
hardly
C.
frequently
D.
usually
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A.
will open
B.
shall open
C.
open
D.
can open
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A.
must accept
B.
will accept
C.
accept
D.
be acceptable to
【简答题】If A=[1,31,41;61,21,0],then A(1,1)=(_);
【单选题】Because there is no direct steamer from here to your Port, we suggest that you ______ trans-shipment at Hong Kong.
A.
may accept
B.
can accept
C.
must accept
D.
accept
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