Based on your 2209 fix，which would be a warning that you are being set down on Block Island Sound South Entrance Obstruction Lighted BIS Buoy? （）
You are steaming in a westerly direction along the Gulf Coast.You see ahead of you a lighted buoy showing a red isophase light.Which action should you take（）.
Some lights used as aids to marine navigation have a red sector to indicate a danger area. The limits of a colored sector of a light are listed in the Light List in which of the following manners?（）
Before you leave the office，＿＿all lights are out.
You are in charge of a power-driven vessel navigating at night.You sight the red sidelight of another vessel on your port bow.The other vessel’s aft masthead light is to the right of her forward masthead light. You should（）.
Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.
The latest known details of lights are given in（）.
Vessels are warned（）in the area enclosed by pecked lines owing to the existence of numerous telegraph cables.
You see a vessel displaying three lights in a vertical line.The highest and lowest lights are red and the middle light is white.She is also showing a white light at the stern，which is lower than the forward light.It could be a（）.
One hour before arrival at Elbe 1 light vessel，masters are advised to contact the pilot boat by（）.
You are on a vessel that cannot comply with the spacing requirement for masthead lights.What is required in this situation（）.
（）are experienced in temperate latitudes during warn summer weather but rarely exceed Force 3 and may extend 10 to 15 miles on either side of the coastline.
If several fixed navigational lights are visible at the same time，each one may be positively identified by checking all of the following EXCEPT what against the Light List?（）
Red warning lights (install)_____ in the car in case the car breaks down.
In the city of Harbin, the ice city, fantastic lanterns are carved from large blocks of ice and gorgeously illuminated with colored electric lights.
57. All marks within the IALA system are distinguished by ___. ①shape ②top mark ③light characteristics ④color
41. The names of lights having a range of 15 miles and over are printed in ______.
139. Many of the lights on this coast are placed so high as to be frequently obscured by _____
根据以下资料，回答1~5题。 The warnings from electronic road signs are not working as well
If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights.These additional lights may be shown if the tow is ().
If you are on holiday in other places, the lights in your house should（）
The lighting in Jake’s Steak Restaurant is dim. The chairs are covered in leather and each table is covered with a white linen cloth. The colors are limited to earth tones with an occasional splash of
