海船船员考试
单选题The radiotelegraph alarm signal is（）.A SOS sent three timesB ten one-second dashes with a four-second interval between themC twelve four-second dashes with a one-second interval between themD twelve one-second dashes with a short interval between them
题目
SOS sent three times
ten one-second dashes with a four-second interval between them
twelve four-second dashes with a one-second interval between them
twelve one-second dashes with a short interval between them
参考答案和解析
相似问题和答案
第1题：
Most modern Loran-C receivers，when not tracking properly，have a（n）______．
A.Bell alarm to warn the user
B.Lighted alarm signal to warn the user
C.Alternate signal keying system
D.View finder for each station
第2题：
______ is not contained in the muster list．
A.the details of how the order to abandon ship is given
B.the details of the general emergency alarm signal，the fire alarm signal and the public address system
C.the substitutes for key persons who may become disabled
D.the various fire sections enclosed by“A”class divisions
第3题：
Operation of the valve control release on a fixed CO2 system must immediately ______.
A.release CO2 to the protected space
B.secure all mechanical ventilation in the protected space
C.sound the rig’s general alarm signal for a fire
D.sound an alarm in the ballast control room
操作固定二氧化碳系统控制阀的释放必须在所保护空间关闭所有机械通风。
第4题：
abandon ship
dismissal from fire and emergency stations
fire and emergency
man overboard
第5题：
If you hear more than six short blasts and one long blast of the whistle supplemented by the same signal on the general alarm, you should ______.
A.start the fire pump
B.go to your man overboard station
C.go to your lifeboat station
D.stand by for collision
假如你在气笛上听到补充相同于全船报警信号超过六短声又一长声时，你应到达救生艇甲板。
第6题：
What is the most appropriate action for a GMDSS radio operator to take in a distress situation where immediate help is needed，but the vessel is not sinking nor needs to be abandoned ________．
A.Switch off EPIRB and SART manually
B.Transmit distress call by MF/HF，VHF or INMARSAT
C.Notify the RCC（Rescue Coordination Center）through VHF FM on channel 13
D.Transmit distress call by activating the radiotelegraph automatic alarm signal
第7题：
A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the ______.
A.distress position
B.spoken words “Mayday, Mayday, Mayday”
C.ship’s name
D.ship’s call letters
船舶遇险通过无线电话发送两个占线信号后直接用口头说Mayday,maydaymayday
第8题：
The emergency signal for fires is sounded on the ship’s whistle and general alarm as _____.
A.a continuous ringing for 10 seconds
B.one short ring followed by one long ring
C.two long rings of at least 20 seconds
D.a continuous ringing until the fire is extinguished
火灾紧急信号被船上的汽笛和警报发出连续10秒的鸣放。
第9题：
at each alarm bell
at each alarm actuator
near all exits
on the station bill
第10题：
abandon ship
dismissal from fire and emergency stations
fire and emergency
man overboard