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单选题
Collision rules（）apply to all vessels upon the high seas.
A
should
B
must
C
shall
D
have to
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Two stations on the Ezonexam LAN transmit at the same time, resulting in a collision. What happens when a collision occurs on the network? (Choose all that apply)A．Each device on the Ethernet segment stops transmitting for a short time.B．A jam signal informs all devices that a collision occurred.C．When data transmission resumes, the devices that were involved in the collision have priority to transmit.D．The devices that are involved in the collision stops transmitting for a short time.E．The collision invokes a random back-off algorithm.
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Radar reflectors are required for ______.A.all fishing vessels over 39 feet in lengthB.sail-propelled fishing vesselsC.all fishing vessels of less than 200 GTD.wooden hull fishing vessels with a poor radar echo
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Rule 14 describes the action to be taken by vessels meeting head-on. Which of the following conditions must exist in order for this rule to apply?______.A.Both vessels must be power-driven.B.They must be meeting on reciprocal or nearly reciprocal courses.C.The situation must involve risk of collision.D.All of the above
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In which situation do the Rules require both vessels to change course ?______.A.Two power-driven vessels meeting head-onB.Two power-driven vessels crossing when it is apparent to the stand-on vessel that the give-way vessel is not taking appropriate actionC.Two sailing vessels crossing with the wind on the same sideD.All of the above
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Which statement is true regarding an Ethernet collision domain?（）A、If a router is used, the collision domain includes all devices connected to the router.B、If a hub is used, the collision domain is limited to each device and the hub.C、If a switch is used, the collision domain is limited to each device and the switch.D、If a bridge is used, the collision domain includes all devices connected to the bridge.
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Which two statements are true regarding an Ethernet collision domain?（）A、If a switch is used, the collision domain is limited to each device and the switchB、If a hub is used, the collision domain is limited to each device and the hubC、If a hub is used, the collision domain includes all devices connected to the hubD、If a switch is used, the collision domain includes all devices connected to the switch
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Which statement is true regarding an Ethernet collision domain?（）A、If a router is used, the collision domain includes all devices connected to the routerB、If a hub is used, the colision domain is limited to each device and the hubC、If a switch is used, the collision domain is limited to each device and the switchD、If a bridge is used, the collision domain includes all devices connected to the bridge
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单选题A vessel constrained by her draught shall，when risk of collision with another vessel in a crossing or head-on situation exists，（）.A
apply the relevant Steering and Sailing Rules as a power-driven vesselB
apply the relevant Steering and Sailing Rules as a Sailing vesselC
apply the relevant Steering and Sailing Rules as a vessel not under commandD
apply the relevant Steering and Sailing Rules as a vessel engaged in a towing operation
考题
单选题The rules require that a stand-on vessel SHALL take action to avoid collision when she determines that（）.A
risk of collision existsB
the other vessel will cross ahead of herC
the other vessel is not taking appropriate actionD
collision cannot be avoided by the give-way vessel's maneuver alone
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单选题Risk of collision is considered to exist if（）.A
four vessels are nearbyB
a vessel has a steady bearing at a constant rangeC
there is any doubt that a risk of collision existsD
a special circumstance situation is apparent
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单选题The Rules state that vessels may depart from the Rules when（）.A
there are other vessels in the vicinityB
operating in a traffic separation schemeC
engaged in a situation involving more than two vesselsD
necessary to avoid immediate danger
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单选题The officer of the watch should（）comply with the collision rules.A
some timesB
oftenC
at all timesD
seldom
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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
stop her enginesB
alter course to starboardC
sound the danger signalD
back down
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单选题The steering and sailing rules for vessels in restricted visibility apply to vessels（）.A
in sight of one another in fogB
navigating in or near an area of restricted visibilityC
only if they are showing special purpose lightsD
only if they have operational radar
考题
单选题A stand-on vessel in a crossing situation is allowed to take action when （）.A
on a collision courseB
the vessels will pass within one mileC
it becomes apparent to her that the give-way vessel is not taking appropriate actionD
the relative speed of the vessels indicates collision in less than six minutes
考题
单选题Two vessels are approaching each other near head on. What action should be taken to avoid collision?（）.A
The first vessel to sight the other should give wayB
The vessel making the slower speed should give wayC
Both vessels should alter course to starboardD
Both vessels should alter course to port
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单选题When two vessels are in immediate danger of collision，the stand-on vessel must（）.A
abandon shipB
assist in taking whatever action is necessary to avoid collisionC
hold course and speedD
sound a distress signal
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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
When the two vessels are less than half a mile from each otherB
When the give-way vessel is not taking appropriate action to avoid collisionC
When collision is imminentD
The stand-on vessel is never allowed to take action
考题
单选题Which statement about the Navigation Rules is TRUE?（）.A
The rules require vessels to comply with Traffic Separation Scheme regulationsB
The rules use the term safe speedC
The Rules permit a stand-on vessel to take action prior to being in extremisD
All of the above are correct
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单选题Which statement is true regarding an Ethernet collision domain?（）A
If a router is used, the collision domain includes all devices connected to the routerB
If a hub is used, the colision domain is limited to each device and the hubC
If a switch is used, the collision domain is limited to each device and the switchD
If a bridge is used, the collision domain includes all devices connected to the bridge
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单选题By the sole fact of using the Canal Waters，Masters and Owners of vessels（）themselves to accept all the conditions of the present Rules of Navigation.A
lashB
fastenC
bindD
tie
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多选题Which two statements are true regarding an Ethernet collision domain?（）AIf a switch is used, the collision domain is limited to each device and the switchBIf a hub is used, the collision domain is limited to each device and the hubCIf a hub is used, the collision domain includes all devices connected to the hubDIf a switch is used, the collision domain includes all devices connected to the switch
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多选题Which two statements are true regarding an Ethernet collision domain?（）AIf a switch is used, the collision domain is limited to each device and the switch.BIf a hub is used, the collision domain is limited to each device and the hub.CIf a hub is used, the collision domain includes all devices connected to the hub.DIf a switch is used, the collision domain includes all devices connected to the switch.
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单选题The rules state that vessels may depart from the requirements of the Rules when（）.A
there are no other vessels aroundB
operating in a narrow channelC
the Master enters it in the ship's logD
necessary to avoid immediate danger
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单选题The Rules state that risk of collision shall be deemed to exist（）．A
Whenever two vessels approach from opposite directionsB
If the bearing of an approaching vessel does not appreciably changeC
Whenever a vessel crosses ahead of the intended track of another vesselD
If one vessel approaches another so as to be overtaking
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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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