The luminous range of a light takes into account the().
- Aglare from background lighting
- Bexisting visibility conditions
- Celevation of the light
- Dobserver's height of eye
The luminous range of a light takes into account the().
1、By night,you sight the lights of a ves
By night,you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel,it will be marked by().Aa floodlightBtwo red lights in a vertical lineCa single red lightDany visible light
2、The range of a SSB transmission is MOS
The range of a SSB transmission is MOST affected by().Aatmospheric noise and radiated powerBthe frequency band selected and time of day or nightCinterference and position of the moonDradiated power and nearness to shore
3、In the event of a fire, the doors to a
In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ().AconvectionBconductionCradiationDventilatio
4、The period of a lighted aid to navigat
The period of a lighted aid to navigation refers to the().Adate of construction or establishmentBlength of time between flashes of the lightCtime required for the longest flash of each cycleDtime required for the light to complete each cycle
5、How is the intensity of a light expres
How is the intensity of a light expressed in the Light Lists?().ALuminous rangeBGeographic rangeCNominal rangeDMeteorological range
6、The characteristic of a lighted cardin
The characteristic of a lighted cardinal mark may be ().Avery quick flashingBflashingCfixedDocculting