超星 - 作业（四）

单选题

How many frequencies are available for DSC distress alerting on HF band?

A. 1
B. 2
C. 5
D. 7

单选题

Which action should the GMDSS operator take in a distress situation when embarking in survival craft?

A. EPIRB and SART switched on manually prior to embarking; remain aboard vessel in distress.
B. Notify RCC (Rescue Coordination Center) through VHF DSC in portable equipment.
C. Switch on EPIRB and SART immediately and leave on.
D. Communicate with Inmarsat-C from survival craft.

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单选题

Where may survival craft portable VHF radiotelephones be operated?

A. Between survival crafts.
Between survival craft and ship.
C. Between survival craft and rescue unit.
D. All of the above

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单选题

Which statement is not true regarding the SART?

A. Responds to interrogations by a vessel's X-band radar.
B. Transmits on the 9 GHz band reserved for navigational radar.
C. Operates in con unction with a vessels S-band radar.
D. Transmits a distinctive code for easy recognition.

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单选题

Which of the following EPIRBs is most likely to transmit a distress alert signal?

A. 9 GHz EPIRBs.
B. Ch 16 EPIRBs.
C. 406 MHz EPIRBs
D. 121.5 / 243 MHz EPIRBs.

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单选题

Which of the following statements is true?

A. The SART can be auto-operated in vertical position sometimes.
B. The SART can be auto-operated in parallel position at any time.
C. The SART can be auto-operated under the water sometimes.
D. The SART can be operated in float-free position when combined with EPIRB

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判断题