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【简答题】
What does UTC stand for?
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皮皮学刷刷变学霸
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【简答题】完形填空 Night after night, as was often the case, she'd lean down and push my long hair out of the __ 1 __, then kiss my forehead. I don't remember when it first started __ 2 __ me.But it did.Finally one...
【单选题】According to the school rules, no student __________ go out of the school after eleven o’clock at night without the teacher’s permission.
A.
will
B.
must
C.
may
D.
shall
【简答题】在某个关系中能惟一区分不同元组的单个属性或是属性集合被称为（）
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