航海英語雷達及ARPA的使用單項選擇題每日一練(2019.01.06)

來源：考試資料網(wǎng)

1 （）is not used in modern radar.

2 Which statement about an estimated position is TRUE?（）

3 Your ARPA has been tracking a target and has generated the targets course and speed.The radar did not receive a target echo on its last two scans due to the weather.What should you expect under these circumstances（）.

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4 （）typically extends from close as 0.1 nautical miles out to 32 NM.

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5 The correct method of switching off a marine radar is to turn power switch to（）position first，then to（）position.

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