GMDSS英语阅读习题集(有答案).pdfVIP

第三篇 英语阅读 单项选择题 1、Which radio equipment is not necessary for the ships sailing in the sea area A1? A、NAVTEX receiver. B、HF DSC. C、EPIRB. D、VHF DSC. 2、Which radio equipment is not necessary for the ships sailing in the sea area A1? A、NAVTEX receiver. B、406 MHz EPIRB. C、VHF EPIRB. D、VHF DSC. 3、Which radio equipment is not necessary for the ships sailing in the sea area A3? A、MF DSC. B、Enhanced Group Calling receiver. C、GSM radiotelephone. D、Satellite EPIRB. 4、What is the approximate range of MF radio waves during the day time? A、10 nautical miles. B、600 nautical. C、150 nautical miles. D、1200 nautical. 5、What is the approximate range of VHF radio waves during the day time? A、10 nautical miles. B、600 nautical miles. C、150 nautical miles. D、1200 nautical miles. 6、Which equation shows right ratio between the frequency (f) and the wavelength (Lambda) of radio waves? A、f = C/Lambda. B、f = Lambda/C. C、f = C x Lambda. D、f = C x 6.28 x Lambda. 7、Which system is often used to provide accurate vessel position information to the GMDSS equipment? A、GPS. B、COSPAS-SARSAT. C、EPIRB. D、INMARSAT-F 8、What is defined as the area within the radiotelephone coverage area of at least one VHF coast station in which continuous DSC alerting is available as defined by the IMO regulation for GMDSS? A、Sea Area A1. B、Ocean Area Regions AOR-E, AOR-W, POR or IOR. C、Sea Area A2.