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【判断题】
【纺织】电炉、烘箱等用电设备在使用中,使用人员不得离开。A.
正确
B.
错误
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【简答题】若函数f（x）=sin（3-5x），则f′（x）=______．
【单选题】The rule by the Canadian court is called 'historic' mainly for______.
A.
the compensation for justices in damages
B.
the sum of money involved with awarding
C.
the profits being put before court's decision
D.
the concern about public health and trust
【简答题】The Buyer shall have the right to claim against the Seller for compensation of losses within 60 days after arrival of the goods at the port of destination, should the quality of goods be found not in ...
【简答题】The Buyer shall have
the right to claim against the Seller for compensation of losses within 60 days
after arrival of the goods at the port of destination, should the quality of
goods be found not in ...
【单选题】下面关于数据库管理系统的两层映像说法正确的是( )
A.
一个模式可以对应多个外模式
B.
一个模式也可以对应多个内模式
C.
外模式/模式映像定义的是外模式和用户模式之间的对应关系
D.
模式/内模式映像定义的是逻辑模式和子模式之间的对应关系
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