单选题Automatic mechanical ventilation shutdown is required for CO2 systems protecting the（）.A machinery spacesB cargo compartmentsC living quartersD galley

A. When two-way disk mirroring is required for the allocation units

B. When three-way disk mirroring is required for the allocation units

C. When using hardware mirroring or RAID

D. When disk mirroring is required for the Automatic Storage Management (ASM) disks

A. Autoconfiguration

B. Automatic 6to4 Tunnel

C. Automatic 6to4 Relay

D. Network Address Translator - Protocol Translator (NAT - PT)

E. Intrasite Automatic T unnel Address Protocol (ISATAP)

Motor-propelled lifeboats are required to be fitted with which of the following?______.

A.Compartments for the storage of canned drinking water

B.Ballast tanks to prevent the boat from capsizing

C.An air starter on the diesel engine

D.Auxiliary mechanical propulsion ( Fleming gear )

Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT ______．

A.Start the mechanical ventilation system for the engine room

B.Operate the fuel shut-off for the engine room

C.Operate all fire extinguishing equipment aboard the vessel on board the vessel，including starting the fire pump

D.All of the above

A.salinity is abnormally

B.high steam demand is too

C.feed-water flow is low

D.water level is abnormally low

Your vessel has a gasoline engine and a mechanical exhaust ventilation system．BEFORE starting the engine，the exhaust blower should be run long enough to ______．

A.warm up the exhaust blower motor

B.provide a proper supply of fresh air for the engine（s）

C.see the system is in good operating condition

D.insure at least one complete change of air in the compartments concerned

Operation of the valve control release on a fixed CO2 system must immediately ______.

A.release CO2 to the protected space

B.secure all mechanical ventilation in the protected space

C.sound the rig’s general alarm signal for a fire

D.sound an alarm in the ballast control room

Due to the large amount of heat picked up by the air in boiler and engine rooms, it would be impracticable to maintain ambient conditions within the comfort zone by air conditioning or any other means. The normal practice is to provide copious mechanical ventilation; in boiler rooms, the quantity is equated to the combustion requirements, while in a motor ship engine room the supply may be 25-50% in excess of the requirements of the engines.

The axial flow fan is particularly suited to handle these large air volumes at the moderate pressures required, while of course the “straight-through” flow feature places it at an advantage over the centrifugal fan.

The increasing adoption of automation, with the provision of a separate control room makes less significant the fact that comfort conditions cannot be maintained in the engine room all the time. Which of the following devices should be taken to maintain ambient conditions of the boiler and machinery space?

A.air compressor

B.air cooler

C.air-conditioning plant

D.mechanical ventilation plant