Most modern Loran-C receivers，when not tracking properly，have a（n）______．A.Bell alarm to warn the userB.Lighted alarm signal to warn the userC.Alternate signal keying systemD.View finder for each station

题目

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

相似考题

1.Operation of the valve control release on a fixed CO2 system must immediately ______.A.release CO2 to the protected spaceB.secure all mechanical ventilation in the protected spaceC.sound the rig’s general alarm signal for a fireD.sound an alarm in the ballast control room

2.The alarm signal for engine room catching fire is a blast of random bell followed by____.A.two knocksB.three BlocksC.four knocksD.five knocks

3.Loran-C uses the multiple pulse system because ______．A.Less signal energy is necessary for receiver operationB.More signal energy is available at the receiverC.It significantly increases the peak powerD.It increases the signal capacity

4.____，the bus started at once.A、The signal was givenB、The signal givingC、The signal givenD、When the signal given

参考答案和解析
正确答案：B
更多“Most modern Loran-C receivers，when not tracking properly，have a（n）______．A.Bell alarm to warn the userB.Lighted alarm signal to warn the userC.Alternate signal keying systemD.View finder for each station”相关问题

  • 第1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


    正确答案：D

  • 第2题：

    单选题
    The signal for fire alarm on a ship must be indicated（）.
    A

    at each alarm bell

    B

    at each alarm actuator

    C

    near all exits

    D

    on the station bill


    正确答案： B
    解析： 暂无解析

  • 第3题：

    单选题
    Which of the following represents the emergency signal for fire aboard ship?（）
    A

    More than six short blasts and one long blast on the whistle

    B

    Continuous blast of the ships whistle for a period of not less than 10 seconds supplemented by the same signal on the general alarm

    C

    Three short blasts of the whistle supplemented by the same signal on the general alarm

    D

    More than six short blasts and one long blast on the whistle supplemented by the same signal on the general alarm


    正确答案： D
    解析： 暂无解析

  • 第4题：

    单选题
    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

    collision station


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    The signal for a fire emergency on an OSV is（）.
    A

    a 30 second on 30 second off alternating signal

    B

    the continuous blast of the ships whistle for not less than 10 seconds supplemented by the continuous ringing of the general alarm bells for not less than 10 seconds

    C

    an intermittent ringing of the general alarm for not less than ten seconds

    D

    announced over the PA system


    正确答案： C
    解析： 暂无解析

  • 第6题：

    单选题
    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


    正确答案： A
    解析： 暂无解析

  • 第7题：

    单选题
    Traditionally，the signal for fire aboard ship is（）.
    A

    more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm

    B

    continuous sounding of the ship's whistle and the general alarm for at least 10 seconds

    C

    1 short blast on the whistle

    D

    alternating short and long blasts on the ship's whistle


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Loran-C uses the multiple pulse system because（）.
    A

    Less signal energy is necessary for receiver operation

    B

    More signal energy is available at the receiver

    C

    It significantly increases the peak power

    D

    It increases the signal capacity


    正确答案： D
    解析： 暂无解析

  • 第9题：

    单选题
    While working in the engine room, you hear seven short blasts followed by one long blast on the ships whistle, supplemented by the same signal on the general alarm bellsYou should （）.
    A

    start the fire pump to charge the fire main

    B

    standby the main console and await orders from the engineer on watch

    C

    go to your fire station

    D

    go to your lifeboat station


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    You hear the general alarm bells and ships whistle sound for over 10 secondsTraditionally, this is the signal for （）.
    A

    abandon ship

    B

    dismissal from drills

    C

    fire and emergency

    D

    lower lifeboats


    正确答案： A
    解析： 暂无解析

  • 第11题：

    单选题
    The alarm signal for engine room catching fire is a blast of random bell follow by （）
    A

    two knock

    B

    three knocks

    C

    four knocks

    D

    five knocks


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    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


    正确答案： D
    解析： 暂无解析

  • 第13题：

    下面属于5GNR上行链路reference-signal的是（）

    • A、Demodulation-reference-signal-for-PUSCH
    • B、Phase-tracking-reference-signals-for-PUSCH
    • C、Demodulation-reference-signal-for-PUCCH
    • D、Sounding-reference-signal

    正确答案:A,B,C,D

  • 第14题：

    单选题
    When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.
    A

    are required to go to your life-raft

    B

    are dismissed from drills

    C

    should point to the man overboard

    D

    should start the fire pump


    正确答案： A
    解析： 暂无解析

  • 第15题：

    单选题
    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


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    You hear the general alarm and ship’s whistle sound for over 10 seconds. Traditionally，this is the signal for（）.
    A

    abandon ship

    B

    dismissal from fire and emergency stations

    C

    fire and emergency

    D

    man overboard


    正确答案： A
    解析： 暂无解析

  • 第17题：

    单选题
    The Class A EPIRB transmits a signal（）.
    A

    that follows the curvature of the earth

    B

    that can be picked up by SARSAT satellite

    C

    that activates an alarm on board nearby aircraft

    D

    to alert shore stations and then transmits a homing signal


    正确答案： C
    解析： 暂无解析

  • 第18题：

    单选题
    While reading the muster list, you see that "three short blasts on the ships whistle and the same signal on the general alarm bells" is the signal for （）.
    A

    abandon ship

    B

    dismissal from drills

    C

    fire and emergency

    D

    man overboard


    正确答案： C
    解析： 暂无解析

  • 第19题：

    单选题
    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


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    All Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
    A

    every station in one chain to transmit at the same time

    B

    each station to transmit without reference to another station

    C

    on-line transmission of single-line transmitters at the same time

    D

    each station to only depend on the master for synchronization and signal ratio


    正确答案： C
    解析： 暂无解析

  • 第21题：

    单选题
    While reading the station bill, you find "three (3) short blasts on the whistle and three (3) short tings on the general alarm bells," this signal is for （）.
    A

    abandon ship

    B

    dismissal from fire and emergency stations

    C

    fire and emergency

    D

    man overboard


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    How can vessel personnel detect the operation of a SART in its vicinity?（）
    A

    A unique radar signal consisting of a blip code radiating outward from a SART's position along its line of bearing

    B

    A unique two tone warbling signal heard on VHF-FM ch-70

    C

    A unique two tone alarm signal heard upon the automatic unmuting of the 2182 kHz radiotelephone automatic watch receiver

    D

    The SART signal appears as a target which comes and goes; the effect of heavy swells on the SART


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    The radiotelegraph alarm signal may be used to announce（）.
    A

    that a distress message will follow

    B

    a request for assistance in searching for a man overboard

    C

    an urgent warning about a cyclone

    D

    All of the above


    正确答案： D
    解析： 暂无解析

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