航海英語船舶索具名稱單項(xiàng)選擇題每日一練(2019.01.20)

來源：考試資料網(wǎng)

1 A whipping is（）.

2 In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.

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3 A snatch block is a（）.

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4 The size of wire rope is determined by the（）.

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5 Chafing gear is used to（）.

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