航海英語(yǔ)航海通告與警告單項(xiàng)選擇題每日一練(2019.01.18)

來(lái)源：考試資料網(wǎng)

1 （）day，pilot flag should be displayed from main mast．

2 （）is not contained in the NM Weekly.

3 On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.

4 What is the most important source of information to be used in correcting charts and keeping them up to date（）.

5 Advise you（）engines．