A、open；short；after
B、closed；short；after
C、open；long；before
D、closed；long；before
更多“If the engine is naturally aspirated, or is a small high-speed type with a centrifugal turbocharger, the period of valve overlap（）,ie when both valves are（）, will be and the exhaust valve will close some 10°top dead canter（）.”相关的问题
A、that the fuel valve is open B、if the air supply system is open C、if the water sprinkler system is open D、if the limit switch is on
A、Master，or person in charge B、Chief Engineer，or engineer in charge if no chief engineer is required C、Senior mechanic，or mechanic on duty if no senior mechanic designated D、Senior electrician，or electrician on duty if no senior electrician designated
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、The NAT action of off is only supported for destination NAT rule-sets. B、The NAT action of off is only supported for source NAT rule-sets. C、The NAT action of off is useful for detailed control of NAT. D、The NAT action of off is useful for disabling NAT when a pool is exhausted
A、stop main engine immediately B、ask the captain and the chief engineer’s permission for stopping the engine C、initiatively inquire the bridge for the situation D、stop engine and inform bridge
A、The medium speed 4-stroke trunk piston engine B、The low speed 2-stroke crosshead engine C、The medium speed 2-stroke crosshead engine D、The low speed 4-stroke trunk piston engine
A、air intake is restricted B、engine is cranked too fast C、vibration dampener is faulty D、exhaust back pressure is low
客服
TOP
查看正确答案
