單項選擇題If necessary to avoid collision or allow more time to()the situation,a vessel shall slacken her speed or take all way off by stopping or reversing her means of propulsion.

A.access
B.process
C.profess
D.recess


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1.單項選擇題Five or more short blasts on a vessel’s whistle indicates that she is().

A.In doubt that another vessel is taking sufficient action to avoid a collision
B.Altering course to starboard
C.Altering course to port
D.The stand-on vessel and will maintain course and speed

2.單項選擇題Every vessel which is directed by these Rules to keep out of the way of another vessel shall,if the circumstances of the case admit,avoid().

A.Crossing ahead of the other
B.Crossing astern of the other
C.Passing port to port
D.Passing starboard to starboard

5.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