A、four-stroke
B、two-stroke
C、slow speed
D、reversible
更多“The （） engine is used for alternators and sometimes for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.”相关的问题
A、A.Use the C02 system and evacuate the engine room B、B.Use the fire main system and evacuate the engine room C、C.Evacuate the engine room and use the C02 system D、D.Evacuate the engine room and use the fire main system
A、It is only used for exception traffic. B、It is an FE link called fxp2. C、It is rate-limited to avoid DDOS attacks. D、It is only used to send the forwarding-table from the Routing Engine to the Packet-Forwarding Engine.
A、Use the CO2 system and evacuate the engine room B、Use the fire main system and evacuate the engine room C、Evacuate the engine room and use the CO2 system D、Evacuate the engine room and use the fire main system
A、The coolant temperature must be maintained at 180℃ B、The thermostatic bypass valves must be manually opened before the engine is started C、The pressure cap must be removed while the engine is secured D、Electrical power to the heater must be secured before the cooling system is drained
A、two fuel oil transfer pumps provided where one is to be independent of the main engine B、two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engine C、engine driven transfer pumps and only used in constant speed applications D、the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
A、Between；more commonly B、Among；the most commonly C、Between；not more commonly D、Among；not the most commonly
A、No action required, wide metrics are used by default in IS-IS. B、Enable wide-metrics-only under protocols IS-IS. C、Enable traffic-engineering under protocols IS-IS. D、Disable TLVs 2 and 128 which carry the 6-bit metrics (0-63).
A、A.It is only used for exception traffic. B、B.It is an FE link called fxp2. C、C.It is rate-limited to avoid DDOS attacks. D、D.It is only used to send the forwarding-table from the Routing Engine to the Packet-Forwarding Engine.
A、Lubrication systems using engine driven lube oil pumps do not require any additional independent arrangement when such arrangements have been proven reliable B、The use of engine driven pre-lube pumps is permitted on vessels with propulsion systems developing less than 500 shaft horsepower C、When forced lubrication is used for propulsion engines, one independently driven stand-by pumps is to be provided in addition to the necessary pumps for normal operation D、Lubrication systems where two oil coolers are fitted require a minimum of two temperature control devices which may be actuated by similar sensors
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