航海英語航海圖書資料單項(xiàng)選擇題每日一練(2019.01.11)

來源：考試資料網(wǎng)

1 The Earth has the shape of a(n) （）.

2 Coral atolls，or a chain of islands at right angles to the radar beam，may show as a long line rather than as individual targets due to （）.

3 Attention is called to the fact that in many cases charted depths may be decreased by up to （）.

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

5 Place names used should be those （）.

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