更多"All coast radio stations（）DSC insta"的相关试题:
[单项选择]Details of coast radio stations and radar stations can be found in（）.
A. Admiralty Chart
B. Admiralty Light list
C. Admiralty List of Radio Signals
D. Admiralty Notices to Mariners
[单项选择]How does a coast radio station communicating by HF radio normally identify itself?（）
A. By its subscriber number
B. By its call sign
C. By its MMSI
D. By its MID
[单项选择]The Coast Radio Stations are found in（）.
A. Admiralty List of Lights and Fog Signals
B. Admiralty Maritime Communications
C. Admiralty List of Radio Signals
D. Admiralty Digital List of Lights
[单项选择]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
[单项选择]（）communication are intership VHF radio telephone communication.
A. ship-to-shore
B. shore-to –ship
C. bridge-to-bridge
[单项选择]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
[单项选择]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
[单项选择]If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens? （）
A. The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator
B. The transmission is not initiated and "ERROR" is indicated on the display readout
C. The transmission will be made with "default" information provided automatically
D. The receiving station will poll the DSC unit of the vessel in distress to download the necessary information
[单项选择]The height of a VHF radio antenna is more important than the power output wattage of the radio because（）.
A. VHF communications are basically line of sight
B. the air is more dense the higher you go
C. salt water is a poor conductor of sound
D. sea water absorbs the radiated energy
[单项选择]If a DSC distress relay is transmitted from coast station , it will（）.
A. indicate the ship in distress that the alert has been received
B. alert ships in the area of a distress incident that a distress has occurred
C. inform other coast station of distress incident
D. repeat the distress alert in 5 minutes
[单项选择]在检查甚高频无线电话装置（VHF）时，当具有数字选择性呼叫装置（DSC）时，应用（）在DSC工作方式下，进行文件的编辑、贮存、发射和接受的效用实验。
A. 6频道
B. 16频道
C. 65频道
D. 70频道
[单项选择]Coast Guard regulations require that all of the following emergencies be covered at the periodic drills on a fishing vessel EXCEPT（）.
A. minimizing the affects of unintentional flooding
B. fire on board
C. rescuing an individual from the water
D. emergency towing
[单项选择]对于通过E&M接口方式实现的VHF遥控，在VHF端，VHF设备的PTT信号与传输设备四线E&M接口的哪根线相连（）。
A. E线
B. M线
C. 音频线
D. 接地线
[单项选择]假设机长的所有无线电VHF工作正常，副驾驶的VHF—1也工作正常，但是当你VHF—2发射信号的时候却听不到声音，那么，你判断是哪个系统LRU出现故障（）
A. 机长控制面板
B. 2#无线电控制面板
C. 遥控电子组件
D. VHF—2收发机
[单项选择]对于通过E&M接口方式实现的VHF遥控，在VHF端，VHF设备的SQ信号与传输设备四线E&M接口的哪根线相连（）。
A. E线
B. M线
C. 音频线
D. 接地线
[单项选择]A radio medical advice service（）ships of all nationalities and no charge is made for this service.
A. is available to
B. is available for
C. are available to
D. are available for
[单项选择]VHF属于：（）
A. 通讯
B. 导航
C. 自动飞行
D. 仪表
[单项选择]当ACP上的VHF1和VHF3的”CALL”灯同时点亮时，可能是：（）。
A. 接收到一个SELCAL呼叫
B. 接收到一个ACARS呼叫
C. 接收到一个SELCAL呼叫或一个ACARS呼叫
D. ACP上的VHF1和VHF3的”CALL”灯不可能同时点亮
