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Г.Образуйте деепричастия от данных глаголов.

(Кончить) строительный институт ,Коля поехал работать на Кавказ.

答案

参考答案：Кончив

单项选择题

Networks can be interconnected by different devices. In the physical layer, networks can be connected by (11) or hubs, which just move the bits from one network to an identical network. One layer up we find bridges and switches, which operate at data link layer. They can accept (12) ,examine the MAC address, and forward the frames to a different network while doing minor protocol translation in the process. In the network layer, we have routers that can connect two networks. If two networks have (13) network layer, the router may be able to translate between the packer formats. In the transport layer we find transport gateway, which can interface between two transport connections. Finally, in the application layer, application gateways translate message (14) . As an example, gateways between Internet e-mail and X.400 e-mail must (15) the e-mail message and change various header fields.

A．repeaters

B．relays

C．packages

D．modems
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单项选择题

某基金经理按照以往经验买甲、乙、丙、丁、戊、己六种股票：不同时买乙和丁；如果不买丁，那么也不买丙；或者不买甲，或者买乙；如果同时买戊和己，那么也买丙。据此，可以有四个推论：(1)如果买丙。那么也买丁；(2)如果买甲，那么也买丁；(3)如果买乙，那么不同时买戊和己；(4)如果同时买戊和己，那么也买丁。
以上推理中，正确的有( )。

A．1个
B．2个
C．3个
D．4个
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