题目

The system is intended for transmitting the security alert when the ship is under attack by pirates, terrorists, etc. It notifies the preset flag administration on land that the ship is under threat, without generating any audio/visual alarms to prevent others onboard from sensing that a security alert is transmitted. Its multi-addressed transmission function enables the transmission of the reports to the ship owner as well as to the flag administration. The information transmitted includes ship's current position and identification. Ship's position, obtained by using the built-in GPS receiver, is sent at regular intervals so that the flag administration and the ship owner are kept informed of the position of the ship. An optional backup battery is available to drive the system up to five days for continual data transmission. Furthermore, its polling function enables the tracking of a ship even after the ship loses communication due to the disturbances caused by pirates.1). In this passage, the "system" is __A) AISB) VDRC) GPSD) SSAS

The system is intended for transmitting the security alert when the ship is under attack by pirates, terrorists, etc. It notifies the preset flag administration on land that the ship is under threat, without generating any audio/visual alarms to prevent others onboard from sensing that a security alert is transmitted. Its multi-addressed transmission function enables the transmission of the reports to the ship owner as well as to the flag administration. The information transmitted includes ship's current position and identification. Ship's position, obtained by using the built-in GPS receiver, is sent at regular intervals so that the flag administration and the ship owner are kept informed of the position of the ship. An optional backup battery is available to drive the system up to five days for continual data transmission. Furthermore, its polling function enables the tracking of a ship even after the ship loses communication due to the disturbances caused by pirates.

1). In this passage, the "system" is __

A) AIS

B) VDR

C) GPS

D) SSAS

题目解答

答案

本文描述的系统用于在船舶受到攻击时发送安全警报，通知船旗国管理机构及船东，同时避免船上人员察觉。该系统具备多地址传输、定期位置更新、备用电池支持及轮询功能。根据分析，AIS（A）为船舶识别系统，VDR（B）为数据记录仪，GPS（C）仅为定位工具，均不符合。SSAS（D）是专门用于船舶保安警报的系统，与文章描述完全一致。 答案：D. SSAS

解析

本题考查对文章内容的理解以及对不同船舶系统功能的识别。解题思路是先明确文章中所描述系统的各项功能特点，然后将各选项所代表系统的功能与之进行对比，从而找出正确答案。

  1. 首先分析文章中系统的功能特点：
    • 该系统用于在船舶受到海盗、恐怖分子等攻击时发送安全警报。
    • 通知预设的陆地船旗国管理机构船舶受到威胁，且不产生任何音频/视觉警报，防止船上其他人察觉安全警报已发出。
    • 具有多地址传输功能，能将报告发送给船东和船旗国管理机构。
    • 传输的信息包括船舶当前位置和身份识别，通过内置GPS接收器获取船舶位置，并定期发送，以便船旗国管理机构和船东了解船舶位置。
    • 有可选的备用电池，可支持系统连续数据传输长达五天。
    • 具备轮询功能，即使船舶因海盗干扰失去通信，也能对船舶进行跟踪。
  2. 接着分析各选项：
    • A选项AIS（Automatic Identification System，船舶自动识别系统）：主要功能是通过船与船、船与岸台之间的自动交换信息，实现船舶的识别、定位和跟踪等，但它并非专门用于在船舶受到攻击时发送安全警报，所以A选项不符合。
    • B选项VDR（Voyage Data Recorder，航行数据记录仪）：主要用于记录船舶航行过程中的各种数据，如船舶的航向、航速、位置等，以便在事故发生后进行分析，而不是用于发送安全警报，所以B选项不符合。
    • C选项GPS（Global Positioning System，全球定位系统）：主要功能是提供船舶的位置信息，它本身并不具备发送安全警报、多地址传输、备用电池支持和轮询等功能，所以C选项不符合。
    • D选项SSAS（Ship Security Alert System，船舶保安警报系统）：是专门为船舶在受到攻击等安全威胁时设计的系统，其功能与文章中描述的系统功能完全一致，所以D选项符合。