题目内容

财务部门是工程建设项目的主要管理部门。

A. 正确
B. 错误

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双速异步电动机不可以通过变频率来改变转速。

A. 正确
B. 错误

电动机常用的电力制动方法有变频制动、反接制动和能耗制动。

A. 正确
B. 错误

Which of the following options applies to virtual Ethernet devices()

A virtual Ethernet adapter can only connect to other partitions within the same system.
B. A virtual Ethernet adapter needs to be connected to an external VLAN capable switch to be able to communicate with other partitions on the same system.
C. A partition can support an unlimited number of virtual Ethernet devices.
D. A virtual Ethernet adapter in the VIO Server that is part of a SEA should not have the "trunk flag" set

小型异步电动机的电容-电磁制动的过程分成两端,开始为电容制动,然后把电动机三相绕组短路进行电磁制动。

A. 正确
B. 错误

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