單項選擇題Every vessel which is（）to keep out of the way of another vessel shall，so far as possible，take early and substantial action to keep well clear.

A.detected
B.decided
C.directed
D.deceased


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2.單項選擇題During the day，a vessel picking up a submarine cable shall carry（）.

A.Three shapes，the highest and lowest shall be red balls，and the middle shall be a white diamond
B.Two black balls
C.Three shapes；the highest and lowest shall be black balls，and the middle shall be a red diamond
D.Three shapes；the highest and lowest shall be black balls and the middle shall be a black diamond

3.單項選擇題Dring a period of “whiteout”，you should expect which of the following（）.

A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects

4.單項選擇題Day-shapes must be displayed（）.

A.Between sunset and sunrise
B.Only between 8 AM and 4 PM
C.During daylight hours in any visibility
D.During daylight hours in unrestricted visibility only

5.單項選擇題At night，a vessel shall indicate that she is restricted in her ability to maneuver by showing in a vertical line two（）.

A.red lights
B.red lights and two white lights
C.red lights with a white light in between
D.white lights with a red light in between