Which two types of VLANs using PVLANs are valid？____答案

【多选题】

Which two types of VLANs using PVLANs are valid？___

A. isolated

B. promiscuous

C. backup

D. secondary

E. community

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A. 只在无线电管理面板1

B. 只在无线电管理面板2

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按下音频控制面板(ACP)上的MECH内话麦克风开关：___

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B. 你可通过音频控制面板INT/RAD开关与地面机械员通话

C. 你可通过音频控制面板上其它开关与地面机械员通话

D. 不确定

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内话系统使驾驶舱能与谁通话：___

A. 客舱乘务员

B. 驾驶舱内所有人员

C. 地面机械员

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与位于发动机短舱处的地面机械员通话，机组必须用下列哪种选择___

A. ACP上麦克风按钮开关选INT

B. ACP上麦克风按钮开关选CAB

C. 以上任何一项

D. 不确定

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你如何取消ONVOICE绿色话音指示灯？___

A. 再次按下该话音按钮

B. 按下VOR接收按钮

C. 以上两个都可

D. 不确定

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音响控制面板上复位按钮的功能是什么？___

A. 再次起动通讯或内话系统操作

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你能否听到通过STBY/NAV选择的信标台识别信号：___

A. 能，按下对应的接收按钮

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C. 不能

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如果无线电管理面板2故障：___

A. 所有通讯系统可由另一个无线电管理面板控制

B. 只有VHF2COM频率不能被控制

C. 整个系统不工作

D. VHF2COM和HF2频率不能被控制

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如果你在VHF2上收到一个选择呼叫，你的ACP控制板出现什么情况：___

A. 黄色信号呼叫在VHF2键上闪亮

B. 三个绿色条形指示灯亮

C. 白色选择呼叫出现在VHF2按钮上，VHF2接收选择器燃亮白色

D. 不确定

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你能否在VHFCOM和PA上同时说话：___

A. 绝不能

B. 能，按下无线电调节开关和PA键

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当你在音频转换板上选择机长3时：___

A. 机长使用第三个乘员的耳机

B. 第三个乘员使用机长的耳机

C. 机长使用其自己的音频设备以及第三个乘员的音频控制面板

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如果无线电管理面板1故障，机组只能以何种方式使用无线电管理面板2___

A. 关闭无线电管理面板1，然后使用无线电管理面板2

B. 用顶板音响开关：CAP3

C. 不需任何操作

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