简述YB25包装机“商标纸注胶启用”故障的显示条件、产生的原因及排障措施。
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HMI是列车监控系统显示屏的缩写。
A. 正确
B. 错误
Which two statements are characteristics of pin groups?()
A. they are used internally within fcoe to map a vsan to a specifc vlan
B. they pin traffic fro a specific compute node mezzanine card to aspecific up link port
C. an iplink port for the adapter is chosen automatically if no pin group is set
HXD2型电力机车无人警惕按钮信号在微机显示屏内显示是()。
A. 1970A
B. 1970B
C. 1970C
《史纪》内分十二“()”,十“表”,八“书”,三十“世家”,七十“()”。