航海英語航海儀器使用說明書單項選擇題每日一練(2019.01.23)

來源：考試資料網(wǎng)

1 The microsecond unit of time is used in radar applications. The microsecond represents which of the following?（）.

2 A tall object with a light on or near the shore，to act as a guide or warning to mariners is called（）.

3 Your ship is steaming at night with the gyropilot engaged. You notice that the vessel’s course is slowly changing to the right. Which action should you take FIRST?（）.

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4 The principal purpose of adjustment of the magnetic compass is to eliminate（）as far as possible.

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5 An ECDIS is required to display which information?（）

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