單項(xiàng)選擇題You are approaching another vessel and are not sure whether danger of collision exists. You must assume（）.

A.there is a risk of collision
B.you are the give-way vessel
C.the other vessel is the give-way vessel
D.there is no risk of collision


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1.單項(xiàng)選擇題If the circumstances admit，（）of small alteration of course and speed shall not be taken to avoid collision.

A.depression
B.oppression
C.succession
D.possession

2.單項(xiàng)選擇題A vessel conducting mine clearing operations will show（）.

A.three balls in a vertical line
B.two balls in a vertical line
C.one ball near the foremast and one ball at each fore yard
D.one diamond near the foremast head and one ball at each fore yard

3.單項(xiàng)選擇題A head-on situation at night is one in which you see（）.

A.one sidelight of a vessel ahead of you
B.one sidelight and a masthead light of a vessel ahead of you
C.one sidelight，a masthead light，and a range light of a vessel ahead of you
D.both sidelights of a vessel dead ahead of you

4.單項(xiàng)選擇題As look-out，you spot an object 45°off your port bow. You should report the object as（）.

A.broad on the port bow
B.3 points on the port bow
C.3 points forward of the port beam
D.on the port beam

5.單項(xiàng)選擇題A proper look-out shall be maintained（）.

A.only at night
B.only during restricted visibility
C.at night and during restricted visibility
D.at all times

6.單項(xiàng)選擇題A vessel engaged in mine clearance operations is called（）.

A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel constrained by her draught
D.a vessel not under way

7.單項(xiàng)選擇題A vessel approaching a narrow channel shall（）.

A.avoid crossing the channel if it impedes another vessel navigating in the channel
B.not overtake any vessels within the channel
C.keep as close as possible to the edge of the channel on her port side
D.anchor only in the middle of the channel

8.單項(xiàng)選擇題The Rules state that vessels may depart from the Rules when（）.

A.there are other vessels in the vicinity
B.operating in a traffic separation scheme
C.engaged in a situation involving more than two vessels
D.necessary to avoid immediate danger

9.單項(xiàng)選擇題A vessel engaged in fishing during the day would show（）.

A.one black ball
B.two cones with bases together
C.a cone，apex downward
D.two cones，apexes together

10.單項(xiàng)選擇題A proper look-out must be kept（）.

A.only in fog
B.only between the hours of sunset and sunrise
C.only when entering and leaving port
D.at all times