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单选题
When two vessels are in immediate danger of collision，the stand-on vessel must（）.
A
abandon ship
B
assist in taking whatever action is necessary to avoid collision
C
hold course and speed
D
sound a distress signal
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Which two statements are true regarding an Ethernet collision domain?（）A、The likelihood of collisions occurring increases when a switch is used.B、The likelihood of collisions occurring increases when a hub is used.C、If a hub is used, the collision domain is limited to each device and the hub.D、If a switch is used, the collision domain is limited to each device and the switch.
考题
单选题Risk of collision is considered to exist if（）.A
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单选题The Rules state that vessels may depart from the Rules when（）.A
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单选题When two power-driven vessels are meeting head-on and there is a risk of collision,each shall（）.A
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单选题A stand-on vessel in a crossing situation is allowed to take action when （）.A
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it becomes apparent to her that the give-way vessel is not taking appropriate actionD
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单选题Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.A
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ofB
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toD
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单选题When is a stand-on vessel FIRST allowed by the Rules to take action in order to avoid collision?（）A
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单选题The two vessels underway may collide with（）,if they don’t take immediate measures.A
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考题
单选题When shall the stand-on vessel in a crossing situation take action to avoid the other vessel（）.A
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考题
单选题A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.A
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考题
单选题The rules state that vessels may depart from the requirements of the Rules when（）.A
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考题
单选题The Rules state that risk of collision shall be deemed to exist（）．A
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单选题On which vessels are the officers and deck crew allowed to operate under a two-watch system on voyages of less than 600 miles? （）A
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All of the above
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单选题Which one of the following rules is not regarding two power-driven vessels meeting end or nearly end on so as to involve risk of collision（）.A
Each shall keep her course and speedB
Each shall alter her course to starboardC
Each shall pass on the portside to the otherD
Each shall indicate such action by one short blast on the whistle
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