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单项选择题

Fire dampers prevent the fire spreading through the process of
contact

A.convection
B.conduction
C.radiation
D.direct
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单项选择题
While on watch in the engine room, you hear a continuous sounding of the general alarm. Which of the following actions should you take?
A.Make an entry in the official logbook
B.Open the master control valves on the fixed CO2 system
C.Start the fire pump and check discharge pressure
D.Secure auxiliary condenser overboard discharge
A.Make
B.Open
C.Start
D.Secure
单项选择题
When adding oil to a refrigeration system, precautions must be taken to ensure that
A.the compressor suction pressure is not too high
B.all air is purged from the pump and charging fittings
C.the high pressure cutout switch is held open to prevent accidental starting
D.the condenser is completely shutdown first
A.the
B.all
C.the
D.the
单项选择题
A (An) __ is the documentary attestation for the delivery of stores and spare parts.
A.engine logbook
B.delivery docket
C.store booklet
D.maintenance book
A.A.engine
B.delivery
C.store
D.maintenance
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