航海英語航海圖書資料單項(xiàng)選擇題每日一練(2018.11.04)

來源：考試資料網(wǎng)

1 A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started? （）

2 Particular care is needed when navigating in the vicinity of（）as very few of these features have been fully surveyed to modern standards to determine their correct position，full extent，or the least depth over them.

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3 Charted depths are decreased（）2 meters．

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4 A line of position derived from a loran reading is a section of a(n) （）.

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5 From （） the mariner can know the data of tide．

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航海英語航海圖書資料單項(xiàng)選擇題每日一練(2018.11.04)

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