ENG VALVE CLOSED指哪个活门（）A、HMVB、PRSOVC、HPSOVD、spar valve
ENG VALVE CLOSED指哪个活门（）
- A、HMV
- B、PRSOV
- C、HPSOV
- D、spar valve
相关考题：
To ensure proper seating when closing a valve on a tank，the valve should be ______．A.Set up as tight as possible by handB.Set up tight using a valve wrenchC.Closed，opened a half turn，and then closedD.Closed against the stop and the locking pin inserted
以下哪种条件导致引气/增压面板上的左隔离活门电门CLOSED（关闭）显示（）。A、任何时间下左隔离活门在关闭位置里B、只是当隔离活门用电门选择关闭时C、当ASCPC指令活门关闭，但活门保持打开位置时D、当活门因为不正常状态而处于关闭位置时
旅客氧气系统中那个活门打开会导致系统工作灯（SYSON）点亮？（）A、系统关断活门sys shutoff valveB、主分配关断活门main distribution valveC、通风活门ventilation valveD、人工关断活门manual shutoff valve
以下有关ENG VA LVE CLOSED（发动机活门关闭灯）说法不正确的是（）A、HPSOV活门位置与指令位置不一致，发动机活门关闭灯明亮B、HPSOV活门位置与指令位置不一致，发动机活门关闭灯不亮C、HPSOV活门关闭时，发动机活门关闭灯暗亮D、HPSOV活门打开时，发动机活门关闭灯不亮
单选题In （） pump a closed discharge valve will not cause excessive pressure to build up.AgearBvaneCscrewDcentrifugal
单选题If a centrifugal bilge pump were continually operated with the discharge valve closed the （）.Amotor overload would openBrelief valve would openCpump would eventually overheatDmotor would overheat
单选题In the suction stroke, the crankshaft is rotating clockwise and the piston is moving （） the cylinderThe inlet valve is （） and a fresh charge of air is being drawn or pushed into the cylinder by the turbocharger.Aup；openedBdown；openCup；closedDdown；closed
单选题In （） pumps a closed discharge valve will cause bursting discharge pressure.AcentrifugalBplungerCinjectorDwater
单选题Each cylinder has one starting valve which is usually opened by air pressure and closed by （）Anuts and boltsBnew jointsCspring forceDsealing rings
单选题The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.Awill liftBwill be liftedCwill closeDwill be closed
单选题What action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?（）AThe tank must be gas freedBThe tank must be ballastedCThe tank must be vented to the atmosphereDThe bypass valve must also be closed
单选题Which of the listed statements is correct concerning the starting of centrifugal pumps?（）AThey should always be started with the discharge valve closedBThey should always be started with the discharge valve openedCA priming pump is always required to flood the impeller suctionDThey should always be started with the sealing line valves closed
单选题If a centrifugal pump were continually operated with the discharge valve closed, the （）.Amotor controller overload would openBpump would eventually overheatCrelief valve would continuously cycle openDmotor would overheat
单选题A butterfly valve consists basically of a disc pivoted across the bore of a ring body having the same radial dimensions as the pipe in which it is fitted.According to the above sentence, which of the following statements is not true?（）AThe diameter of a disc is the same as the outer diameter of the pipeBWe can infer that the valve is opened or closed by rotating the spindleCA butterfly valve comprises a disc and a ring bodyDThe profile of the butterfly valve is a ring body
单选题One of the consequences in continuing to operate a centrifugal bilge pump with the discharge valve closed, is that the （）.Amotor overload will openBrelief valve will openCpump will overheatDmotor will overheat
单选题A centrifugal pump attempting to develop flow against a closed discharge valve has a/an （）.Acapacity of 0%Befficiency of 100%Cinternal slippage of 0%Dshut off horsepower rating of 100%
单选题In its simplest form the pressure reducing valve is opened or closed by （） which is balanced by the downstream pressure acting on a diaphragm.Aadjusting a nutBa pre-tensioned springCany springDupstream pressure
单选题If the discharge valve is closed before the drive motor is stopped, which of the following types of pumps will most likely be damaged?（）ACentrifugalBGearCPropellerDTurbine
单选题In slow speed two-stroke engines,（）the fresh air entering begins when and stops as（）Athe inlet port is opened by the up coming piston； the port is closed by the down goingBthe inlet valve is opened by the down going piston；the inlet valve is closedCthe inlet port is opened by the down going piston；the port is closed by the up comingDthe inlet valve is opened