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

文学审美意识形态（意识形态性、审美特性的结合）的具体内涵是什么？

When two power-driven vessels are meeting on reciprocal or nearly reciprocal courses so as to involve risk of collision，they shall be deemed to be in（）.

A. crossing situation
B. head-on situation
C. restricted visibility
D. overtaking situatio

When in sight of another vessel，any action taken to avoid collision must（）.

A. be accompanied by sound signals
B. not result in another close quarters situation
C. include a speed change
D. All of the above

In complying with the Rules，of what must the mariner take due regard?（）.

A. Limited backing power of his vessel
B. Radar information about nearby vessels
C. The occupation of the other vessel，if known
D. All of the above

In a crossing situation，the stand-on vessel should normally（）.

A. take action to cross ahead of the other vessel
B. take action to pass astern of the other vessel
C. maintain course and speed
D. change course and increase speed

In a crossing situation，a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her own port side shall，if possible，avoid（）.

A. turning to port
B. turning to starboard
C. decreasing speed
D. increasing speed

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. possessio

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

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 time