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多选题
Which statements are true regarding a tablespace（）
A
It can span multiple databases.
B
It can consist of multiple data files.
C
It can contain blocks of different sizes.
D
It can contain segments of different sizes.
E
It can contain a part of a nonpartitioned segment
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Which two statements are true regarding a tablespace（）A、It can span multiple databases.B、It can consist of multiple data files.C、It can contain blocks of different sizes.D、It can contain segments of different sizes.E、It can contain a part of a nonpartitioned segment.
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单选题Which statement about windows and blocks is true?（）A
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Forms automatically navigates to an item located in an activated window. C
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考题
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考题
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