A、sharp turn in the channel
B、narrowing in the channel at that point
C、junction in the channel
D、obstruction that must be left to port
更多“A light characteristic of composite group flashing indicates that there is a(n)（）.”相关的问题
A、flashing amber light B、yellow light with the same characteristics as the sternlight C、all-round yellow light D、yellow light with the same characteristics as the masthead light
A、shown below the stern light B、white in color C、displayed at the masthead D、a yellow light having the same characteristics as the stern light
A、shown below the sternlight B、white in color C、displayed at the masthead D、a yellow light having the same characteristics as the stern light
A、white light whose characteristic is Morse (A) B、group-occulting white light C、composite group-flashing (2 + 1) white light D、composite group-flashing (2 + 1) red or green light
A、the intensity of the light B、checking the period and characteristics against the Light List C、the color，because the buoy will have only a red or a green light D、Any of the above can be used to identify the light
A、Indicates the limits of the navigable channel B、Indicates a danger area C、Is used to identify the characteristics of the light D、Serves no significant purpose
A、A flashing light combined with a fixed light of greater brightness B、Light flashes combined in groups，with a different number of flashes in each group C、A light showing groups of two or more flashes at regular intervals D、A fixed light varied at regular intervals by groups of two or more flashes of greater brightness
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