[单选题] What is the right way to use VHF CH16 and working channel?
A.Ships can call other ships on Ch16 but should move to a working channel as soon as possible.
B.Ship should use working channel to call other ships at any time.
C.Ch16 is only used as the international distress and calling frequency.
D.Ship can use Ch16 or working channel as they like

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[单选题]双向VHF无线电话CH16使用的频率为?
A.156.800MHZ
B.2182KHZ
C.156.050MHZ

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[单选题] 如果两个频率之间小于( )赫兹VHF1和VHF2之间或VHF3和VHF2之间,就会产生干扰
A. 2赫兹
B. 3赫兹
C. 4赫兹
D. 5赫兹

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[单选题]. 如果两个频率之间小于( )赫兹VHF1和VHF2之间或VHF3和VHF2之间,就会产生干扰
A. 2赫兹
B. 3赫兹
C. 4赫兹
D. 5赫兹

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[单选题]VHF用于（） What is funcation of VHF?
A.飞机与飞机间远距离语音通讯 The long distance vioce commnication between aircraft.
B.飞机与地面间近距离语音通讯 The short distance vioce commnication between aircraft and ground station.
C.飞机与飞机，飞机与地面间近距离语音通讯 The short distance vioce commnication between aircraft and aircraft or ground station.

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[单选题]用何种方式可以进入电子舱（） what way can use to enter the electronic cabin？（）。
A.From the cockpit从驾驶舱
B.From the cargo and ground。从货舱、从地面
C.A+ B

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[单选题] The quickest way was to use the car. It was a risk _____ he decided it had to be taken.
A. and
B. but
C. for
D. or

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[单选题]includes.VHF系统包括（） What parts of the VHF system
A.天线、收发机、耦合器 Antenna,transceiver ,coupler
B.天线、收发机、控制面板 Antenna, transceiver and control panel.
C.天线、耦合器、收发机、ACP Antenna,coupler, transceiver and ACP.

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[单选题] International distress signal in VHF calling for help is ______．
A.Help，Help，Help
B.Mayday，Mayday，Mayday
C.Save，Save，Save
D.Rescue，Rescue，Rescue

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[单选题]VHF-DSC使用的频道为 ?
A.VHF CH16
B.VHF CH70
C.VHF CH08

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[单选题] What does the abbreviation VHF stand for？
A. Vessel's Hoisting Flag
B. Very High Safety
C.Vessel's Homing Frequency
D. Very High Frequency

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[单选题] When making VHF radio calls to nearby stations, what level of transmitting power should you use?
A. Low power
B. Medium power
C. High power
D. Extra high power

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[单选题] VHF Radio is one of the very important navigational instruments on board，______ messages can be sent．
A.by which
B.through which
C.by that
D.through that

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[单选题] When the changing of a VHF channel / frequency is accepted，say _______.
A. I am going to change to VHF channel ...
B.I am certainly going to change to VHF channel ...
C.Changing to VHF channel ...
D.VHF channel ... has been changed

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[单选题] All VHF marine band radios operate in the simplex mode, which means that ______.
A. only one person may talk at a time
B. only two persons may talk at the same time
C. the radio only transmits
D. the radio only receives

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[单选题]在应急电气构型下哪部VHF可用？
A. VHF1
B. VHF2
C. VHF1和VHF2
D. 三部都可用

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[单选题]你能否在VHF和PA上同时说话：
A.不能
B.能，按下无线电调节开关和PA键
C.能，用驾驶杆按下通话按钮和PA键
D.能，用氧气面罩和驾驶杆按下通话按钮和PA键

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