航海英語進港指南單項選擇題每日一練(2019.01.17)

來源：考試資料網(wǎng)

1 There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．

2 The pilot motor launches are （） blue，with the PILOT in white．

3 It’s all right to rig the pilot ladder on lee side （）.

4 An embarked Pilot （）.

5 For full information regarding the current circulation of the Indian Ocean，（） Sailing Direction，Current Atlas，etc．