航海英語雷達及ARPA的使用單項選擇題每日一練(2019.01.22)

來源：考試資料網(wǎng)

1 You are underway in restricted visibility and hear a fog signal forward of the beam. Nothing appears on your radar screen. You must（）.

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2 The description Racon beside an illustration on a chart would mean a（）.

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3 Your ARPA has automatic speed inputs from the log．Due to currents，the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances（）.

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4 The fitting of an efficient radar reflector is likely to considerably increase the ship’s probability of（）.

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5 Vessel required to have an Automatic Radar Plotting Aid must have a device to indicate the（）.

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