超星 - 英语阅读9

单选题

How many total frequencies are available for DSC distress alerting?

A. One
B. Five
C. Two
D. Seven

查看答案

单选题

The distress message should be preceded by _________.

A. PAN PAN
B. SECURITE
C. MAYDAY
D. MEDICO

查看答案

单选题

Without the permission of _________, a ship earth station can not access the INMARSAT system.

A. International Maritime Organization
B. International Telecommunication Union
C. the nearest coast station to the ship
D. International Mobile Satellite Organization

查看答案

单选题

The frequency 518kHz will be used to transit _ and _ warnings in NAVTEX.

A. navigational/typhoon
B. traffic/meteorological
C. marine/hurricane
D. navigational/ meteorological

查看答案

单选题

In addition to meeting the requirement of Sea area Aland A2, every ship engaged on voyage in Sea area A4shall be provided with _________.

A. MF radio installation with DSC
B. SES
C. MF/HF radio installation with DSC
D. 2187.5kHz watch receiver

查看答案

单选题

A distress alert can be relayed from an RCC by

A. major coast stations only
B. satellite and terrestrial
C. MF/HF and VHF stations
D. COSPAS-SARSAT

查看答案

单选题

The satellite communication requirements of chapter _________ of the 1974 SOLAS Convention can be met, either wholly or in part, by INMARSAT MESs capable of two-way communications.

A. V
B. III
C. IV
D. II

查看答案

单选题

The proper operation of the DSC facilities shall be tested by means of a test call, when within communication range coast station fitted with DSC equipment, what is the period?

A. weekly
B. Annually
C. Daily
D. Monthly

查看答案

单选题

It is possible for ships to receive safety message transmitted by Navtex station _________.

A. in any INMARSAT regions
B. in each NAVAREA
C. at any distance
D. in Areas A3 and A4

查看答案

单选题

What is the approximate range of VHF radio waves propagation?

A. 300 nautical miles
B. 30-50 nautical miles
C. 200 nautical miles
D. 400 nautical miles

查看答案

How many total frequencies are available for DSC distress alerting?

The distress message should be preceded by _________.

Without the permission of _________, a ship earth station can not access the INMARSAT system.

The frequency 518kHz will be used to transit _________ and _________ warnings in NAVTEX.

In addition to meeting the requirement of Sea area Aland A2, every ship engaged on voyage in Sea area A4shall be provided with _________.

A distress alert can be relayed from an RCC by

The satellite communication requirements of chapter _________ of the 1974 SOLAS Convention can be met, either wholly or in part, by INMARSAT MESs capable of two-way communications.

The proper operation of the DSC facilities shall be tested by means of a test call, when within communication range coast station fitted with DSC equipment, what is the period?

It is possible for ships to receive safety message transmitted by Navtex station _________.

What is the approximate range of VHF radio waves propagation?

The frequency 518kHz will be used to transit _ and _ warnings in NAVTEX.