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【多选题】
ICMP is often used in troubleshooting and verifying network. What statements are true regarding ICMP packets? (Choose two)A.
They acknowledge receipt of TCP segments.
B.
They guarantee datagram delivery.
C.
They can provide hosts with information about network problems.
D.
They are encapsulated within IP datagrams.
E.
They are encapsulated within UDP datagrams.
F.
They are encapsulated within TCP datagrams.
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【单选题】The bilge main is arranged to drain any watertight compartment _____ ballast, oil or water tanks and to discharge the contents overboard.
A.
rather than
B.
other than
C.
in addition that
D.
except for
【单选题】The amount of lubricating oil in the drain tank should be checked by ( )
A.
metering
B.
weighting
C.
sounding rod
【单选题】_____ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.
A.
A filter
B.
A centrifuge
C.
A distiller
D.
A generator
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