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单选题 Ship stations in distress should have the capability to alert other ships in its vicinity via__on
Frequency(frequencies) __

A、 Digital Selective Calling， 156.525MHz and 2187.5kHz.
B、 RT 2182kHz.
C、 RT 2182kHz and 156.8MHz.
D、 RT 156.8MHz
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单选题 What kinds of ships may not comply with SOLAS convention?

A、300GT upward
B、all passenger ships operating in international voyages
C、500GTcargo ship
D、300GT below

单选题 A distress alert can be relayed from an RCC by

A、major coast stations only
B、satellite and terrestrial systems
C、MF/HFandVHFstations
D、COSPAS-SARSAT

单选题 A VHF frequency channel pair of TX 157.200MHzandRX 161.800MHz would most likely be

A、simplex channel and duplex channel
B、simplex channel
C、simplex channel or duplex channel
D、duplex channel

单选题 What is the minimum information which a DSC distress alert shall contain?

A、Identification and position of the station in distress
B、Identification and callsign of the station in distress
C、Identity of the station in distress and the number of crewmembers
D、Identity of the station in distress and the kind of help required

单选题 __system(s) is(are) required for the promulgation of MSI(Maritime Safety Information) in GMDSS as per
SOLAS Convention， as amended in 1988

A、Both the international NAVTEX and Inmarsat SafetyNET.
B、Only the international NAVTEX
C、Only the Inmarsat SafetyNET.
D、Only the HF NBDP.

单选题 Ships in area A 2 should have the capability of transmitting ship-to-shore alerts on__and satellite EPIRB

A、2182kHz
B、2174.5kHz
C、2187.5kHz
D、156.800MHz

单选题 The frequency__is normally used forMF NBDP distress and safety traffic

A、490kHz
B、518kHz.
C、4209.5kHz
D、2174.5kHz

单选题 An area within the coverage of atleast one VHF shore station in which continuous DSC distress alert is available is

A、Sea Area A1
B、Sea Area A2
C、Sea Area A4
D、distress Area