Which signal is recognized as a distress signal?().

题目
单选题
Which signal is recognized as a distress signal?().
A

Directing the beam of a searchlight at another vessel

B

A smoke signal giving off orange colored smoke

C

A whistle signal of one prolonged and three short blasts

D

International Code Signal PAN spoken over the radiotelephone

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相似问题和答案

第1题:

________is the most visible signal of distress from a lifeboat at sea in the daytime.

A.Smoke signal

B.Flash signal

C.Fire signal

D.Radio emergency transmission


正确答案:A

第2题:

If you are on the beach and are signaling to a small boat in distress that your present location is dangerous and they should land to the left,you would ______.

A.fire a green star to the left

B.send the letter K by light and point to the left

C.place an orange signal to your left as you signal with a white light

D.send the code signal S followed by L


正确答案:D

第3题:

One of the signals, other than a distress signal, that can be used by a rescue boat to attract attention is a/an ______.

A.red star shell

B.searchlight

C.burning barrel

D.orange smoke signal


正确答案:B
除了遇险信号外,能被救助船用来吸引注意力的一种信号是探照灯。

第4题:

Which signal and noise values will result in the best phone communication with an access point?()

  • A、signal strength 46dBm, noise level 95dBm
  • B、signal strength 74dBm, noise level 94dBm
  • C、signal strength 68dBm, noise level 79dBm
  • D、signal strength 50dBm, noise level 56dBm

正确答案:A

第5题:

An orange flag showing a black circle and square is a ______.

A.signal indicating a course change

B.distress signal

C.signal of asking to communicate with another vessel

D.signal indicating danger


正确答案:B
一橙色就显示一黑色圆形和方形是遇险信号。

第6题:

Which statement concerning satellite EPIRBs is TRUE ________.

A.Once activated,these EPIRBs continuously send up a signal for use in identifying the vessel and for determining the position of the beacon

B.The coded signal identifies the nature of the distress situation

C.The coded signal only identifies the vessel's name and port of registry

D.If the GMDSS Radio Operator does not program the EPIRB,it will transmit default information such as the follow-on communications frequency and mode


正确答案:A

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


正确答案:B
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:

When comparing DSL broadband to cable broadband, which of the following is an advantage ofDSL broadband?()

A. Upgraded copper lines allow maximum speed greater than cable

B. Signal is not shared back to the switch

C. Signal is shared back to the switch

D. Distance is not a factor in signal speed


参考答案:B

第9题:

Which signal and noise values will result in the best phone communication with an access point?()

  • A、 Signal strength 0dBm, noise level 6dBm
  • B、 Signal strength 8dBm, noise level 9dBm
  • C、 Signal strength 4 dBm, noise level 4 dBm
  • D、 Signal strength 6dBm, noise level 5 dBm

正确答案:A

第10题:

You are the Cisco Network Designer in Cisco.com. Which signal and noise values will result in thebest phone communication with an access point?()

  • A、 signal strength 5dBm
  • B、 signal strength 6dBm
  • C、 noise level 4dBm
  • D、 noise level 5dBm

正确答案:B,D

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