题目内容

在VTP透明模式交换机上创建、重命名或删除的 VLAN 仅对该交换机有效。

A. 对
B. 错

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DTP是思科专有协议，Catalyst 2960和3560自动不启用。

A. 对
B. 错

We thank you for your letter of May 13 and the _______ catalogue.

A. sent
B. enclosed
C. given
D. presented

We wish to introduce ourselves a state-run corporation dealing textiles.

A. as, with
B. for, in
C. as, in
D. with, with

We a specialized corporation, ______ the export of animal by-products.

A. dealing
B. handling
C. dealing with
D. dealt in