第6章 阅读理解

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题型：问答题
试卷简介: 第6章 阅读理解, 此试卷为参加"GMDSS英语【二三副】"的考生提供的"第6章 阅读理解"的答案和解析。
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1 问答题 8分
The INMARSAT-C satellite communications system has a capability known as
Enhanced Group Call (EGC), which enables information providers to send messages
for selective reception by EGC receivers located anywhere in the four ocean regions.
The information provider determines which receivers are to receive the message by in-
cluding identifying information such as the NAVAREA, METAREA or geographical
area for which the MSI is intended, along with the message: individual EGC receivers
can be programmed to use this information to select only. the required messages,and
to reject all others. Based on this selective capability the EGC system support two
services: The EGC SafetyNET service which allows the EGC receiver operator to
program the receiver with the geographical areas which MSI will be received, and the
categories of MSI messages required. The EGC FleetNET service, a commercial
service, where individual EGC receivers are programmed to store an EGC identifica-
tion(ENID) code, which is ased to select only messages intended for ships belonging
to group, such as fleet or national flag, or subscribers to an information service.
2 问答题 8分
INMARSAT-C SafetyNET
Introduction
The INMARSAT-C maritime mobile satellite system has an inherent capability,
known as Enhanced Group call (EGC), which allows broadcast messages to be made
to selected groups of ship stations located anywherewithin a satellite's coverage. Four
geo-stationary satellites provide worldwide coverage for these types of broadcasts.
Two types of EGC services are available: SafetyNET and FleetNET. FleeLNET is a
commercial messaging services offered by INMARSAT, and is not recognized by the
Global Maritime Distress &Safety System, or GMDSS SafetyNET, along with NAV-
TEX, is recognized by the GMDSS as the primary means for disseminating maritime
safety information. Ships regulated by the Safety of Life at Sea Convention traveling
outside areas covered by NAVTEX must carry an INMARSAT-C SafetyNET receiver
by 1 February 1999
3 问答题 8分
The GMDSS makes great use of the satellite communications provided by IN-
MARSAT but also uses terrestrial radio. The equipment required by ships varies ac-
cording to the sea area in which they operateship traveling to the high seas must
carry more communications equipment than those which remain within reach of speci-
fied shore-based radio faciliies. In addition to distress communications, the GMDSS
also provides for the, dissemination of general maritime safety information (such as
navigational and meteorolog cal wamings and urgent information to ships). GMDSS
was introduced to provide a comprehensive communication system available for use
for distress and Search and Rescue (SAR) operations. GMDSS is an enhanced Search
and Rescue (SAR)system using automation and advanced satellite and MF/HF/VHF
adio communication technology: The system is combination of: Satellite communi-
cations; MF/HF/VHF Radiotelephony; Radiotelex Narrow-Band Direct-Printing
Telegraphy); Search And Rescue Radar Transponders (SARTs); Satellite EPIRBs;
Data transmission; Digital Selective Calling (DSC); Two-way VHF radiotelephone;
and NAVTEX receiver.
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第1章 GMDSS相关的英语资料
第2章 英版相关公约、规则及其他资料
第3章 船舶常用英文函电业务
第4章 无线电台日志的记载、规定和要求
第5章 GMDSS 设备说明书
第6章 阅读理解