A light that has a light period shorte

1、A towing light is（）.

A towing light is（）.Ashown at the bowBwhite in colorCshown in addition to the stern lightDan all-round light

2、A towing light is a yellow light havin

A towing light is a yellow light having the same characteristics as a(n)（）Aspecial flashing lightBanchor lightCsternlightDmasthead light

3、A flashing light is a light that（）.

A flashing light is a light that（）.Aflashes at regular intervals at a frequency of 120 flashes or more per minuteBis yellow in colorCis visible over an arc of the horizon of not less than 180°nor more than 225°DAll of the above

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、A vessel showing a yellow light over a

A vessel showing a yellow light over a white light at night is a vessel（）.Aengaged in pilotingBtowing asternCengaged in fishingDin distre

6、A vessel showing a green light over a

A vessel showing a green light over a white light in a vertical line above the level of the sidelights is（）.Aengaged in underwater constructionBunder sail and powerCa pilot vesselDtrawling