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【判断题】
Traffic calming is one of the physical methods for traffic control.A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】在关系模型中,现实世界的实体以及实体间的各种联系均用关系来表示,关系模型中数据的逻辑结构是一张____。
【单选题】A small country imports T-shirts. With free trade at a world price of $10, domestic production is 10 million T-shirts and domestic consumption is 42 million T-shirts. The country’s government now deci...
A.
B.
C.
D.
D
【单选题】A small country imports T-shirts. With free trade at a world price of $10, domestic production is 10 million T-shirts and domestic consumption is 42 million T-shirts. The country’s government now deci...
A.
B.
C.
D.
D
【单选题】The newsletter gives a(n) _______ on current activities.
A.
update
B.
information
C.
suggestion
D.
situation
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