航海英語(yǔ)求生用語(yǔ)單項(xiàng)選擇題每日一練(2019.01.06)

來(lái)源：考試資料網(wǎng)

1 The depth over a shallow patch，（）about 1．5 miles southeastward of Nanshan Tou lighthouse，reduces to 8 meters.

2 The lifeboat releasing gear lever should be marked with the words（）.

3 Lifeboat hatchets should be（）.

4 Sign(s) of respiratory arrest requiring artificial respiration is(are)（）.

5 In order for combustion to occur inside a piping system such as a vapor collection header in a marine emmission control system，there must be（）.