航海英語安全用語單項(xiàng)選擇題每日一練(2019.01.09)

來源：考試資料網(wǎng)

1 There is a drilling rig established（）position 24.1E 25.2N.

2 The term PROLONGED BLAST refers to（）.

3 The radiotelegraphy safety messages for condition indicating distress，urgency and safety，respectively，are（）.

4 Before entering the chain locker，you should（）.

5 The winch at Hatch No.3 is（）trouble.