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【多选题】
属于HXD3B型电力机车变流柜中DCU2驱动控制单元接口的是()。A.
控制电机以及保护变流器过流、过压、超温等电气传感器输入
B.
控制变流模块中IGBT门极的光学开关输出信号
C.
实际电机速度电气传感器输入
D.
电气连接至牵引MVB与SPIF通信
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皮皮学刷刷变学霸
举一反三
【单选题】We shouldn't ignore what happens________it is difficultfor us to accept some stories. [ ]
A.
even if
B.
as if
C.
on condition that
D.
now that
【判断题】People often ignore details and pay attention to some obvious characteristics.
A.
正确
B.
错误
【单选题】I______of your trying to earn some money, but please don’t ignore your studies.
A.
Support
B.
agree
C.
disagree
D.
approve
【多选题】A router is running BGP and receives more than one route for a particular prefix. Assume all the routes for this prefix have the same attributes. Which three path features would be reasons be for the ...
A.
paths from an internal BGP (iBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
B.
paths for which the NEXT_HOP is inaccess ible
C.
paths from an external BGP (eBGP) neighbor if the local autonomous system (AS) appears in the AS_PATH
D.
paths for which the NEXT_HOP is accessible
E.
paths that are marked as synchronized in the show ip bgp output
F.
paths that are marked as not synchronized in the show ip bgp output
【简答题】HTTP协议使用的默认端口号是( )。
【简答题】Many of us are so used to food and drink that is 1) __________ (ready) available in the form of 2) _________ (can) meat, soup and so on, and 3) _________ (bottle) water, milk, Coke or whatever that we...
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