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单选题
The fitting of an efficient radar reflector is likely to considerably increase the ship’s probability of（）.
A
detection
B
being detected
C
the detective
D
the detected
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B、0→初应力→1.05σcon→0.9σcon→σcon（锚固）
C、0→初应力→1.03σcon（持荷2min）→O→σcon（锚固）
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考题
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单选题Which conditions will normally cause a SART to operate in the active mode?（）A
It will respond only to interrogation by 9-Ghz radar signalsB
A SART will normally respond to interrogation from a searching vessel's radar if the radar antenna is at least 15 meters highC
A SART will normally respond to interrogation from a searching aircraft's radar if the radar's output power is at least 10，000 watts and the aircraft is at a height of 3000 feet and within 30 nautical milesD
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单选题先张法施工钢筋张拉时，应力应如何控制？（）A
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多选题Which two reflect best practices for client peering sessions in a BGP route reflection network? （）(Choose two.)Apeer with route-reflectors within the clusterBpeer with route-reflectors outside the clusterCpeer with route-reflector-clients within the clusterDpeer with route-reflector-clients outside the cluste
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单选题对于夹片式具有自锚性能的锚具，先张法低松弛力筋张拉程序为 ( )A
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考题
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考题
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考题
单选题My radar is not working.I require shore based radar assistance.Is shore based radar assistance（）?A
usedB
availableC
in useD
can be used
考题
单选题Which general statement concerning radar is FALSE?（）.A
Raising the antenna height increases the radar rangeB
The ability of radar to detect objects is unaffected by weather conditionsC
Radar bearings are less accurate than radar rangesD
Radar should be checked regularly during clear weather to ensure that it is operating properly
考题
单选题What best explains the BGP route-reflector function？（）A
BGP route-reflector should be in forwarding path of data coming from its clientsB
BGP route-reflector does not have to be in the forwarding path of data coming from its clientsC
BGP route-reflector will stop reflecting the routes if they’re not directly-connected clientsD
None of the above
考题
单选题A chock is a（）.A
deck fitting used to secured mooring linesB
casting fitting at the side of a weatherdeck, used as a fairleadC
sharp block of wood used to support hygroscopic cargoD
smoke pipe for the galley stove
考题
单选题If there is any doubt as to the proper operation of a radar，which statement is TRUE?（）.A
Only a radar expert can determine if the radar is operatingB
All radars have indicator lights and alarms to signal improper operationC
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The radar resolution detector must be energized to check the radar
考题
单选题The closest point of approach (CPA) of a contact on a relative motion radar may be determined（）.A
immediately when the contact is noted on radarB
only if the radar scope is watched constantlyC
after the contact has been marked at least twiceD
by an occasional glance at the radar
考题
单选题Which statement is TRUE concerning a vessel equipped with operational radar?（）.A
She must use this equipment to obtain early warning of risk of collisionB
The use of a radar excuses a vessel from the need of a look-outC
The radar equipment is only required to be used in restricted visibilityD
The safe speed of such a vessel will likely be greater than that of vessels without radar
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