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【判断题】
连通图上各值均不相同，则该图的最小生成唯一的A.
正确
B.
错误
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举一反三
【简答题】A．Michael and Tom have ordered all the food. B．Michael and Tom have made ail the preparations. C．Other friends will bring all the stuff they need. D．Michael's mother has prepared all the food.
【简答题】horizontal lathes, vertical lathes, turret lathes, copying lathes, automatic lathes, CNC lathes and variety of special purpose lathes
【简答题】岩溶地貌又称___ ,指地下水和地表水对以碳酸盐类为代表的可溶性岩石进行破坏和改造的地貌。分为___ 和___ 两种。岩溶地貌景观有__、___、____、____、__、___、____、_____、__ 等。
【单选题】The English have the reputation of being very different from ail other nationalities. It is claimed that living on an island separated from the rest of Europe has much to do with it. Whatever the reas...
A.
they are geographically isolated from the European continent
B.
they have nothing to do with the other Europeans
C.
they like to keep quiet among their acquaintances
D.
they tend to be reserved by nature
【单选题】Ail of us would have enjoyed the party much more if there______quite such a crowd of people there.
A.
weren't
B.
hasn't been
C.
hadn't been
D.
wouldn't be
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