A towing light is（）.
The irregular black line around a charted light such as Race Rock Light indicates that it is （）.
明适应（light adaptation）
光反应(light reactions)
下列属于Light标准的是（）
A towing light is a yellow light having the same characteristics as a(n)（）
环境光（Ambient light）
The question "How fast did he drive when he ran the red light?" ____ “He ran the red light”
As you approach mile 659.4 AHP，you see on the right descending bank a flashing green light. This light marks（）.
A flashing light is a light that（）.
A vessel showing a yellow light over a white light at night is a vessel（）.
The light vessel is reported（）.
When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.
From your position you observe a rotating white and green light to the north. This light is most likely（）.
Brake light的中文含义是（）。
A vessel emitting harmful substances into the air or spilling oil into the sea is a（）.
How is the intensity of a light expressed in the Light Lists?（）.
As you approach Kate Aubrey Bar Light (mile 788 AHP)，yoursearchlight will show what type of marking at the light? （）
Generally, there are two kinds of light pollution: ecological pollution and astronomical light pollution.不属于common knowledge.
“lest too light winning make the prize light” is a quote from ______.
We define : V D is the voltagebetween P terminal and N terminal, ID is the current passing through the diode,and it’s direction is from P to N. if >0 and>0, the diode is in the ( ) region
190. How is the intensity of a light expressed in the Light List?
The characteristic of an ideal diode are those of a switch that can conduct current（ ） .
121.A vessel emitting harmful substances into the air or spilling oil into the sea is a( )。
