气密闸门 air lock
气密闸门 air lock
相关考题：
麻醉机APL阀的意义A、APL是auto pressure lock的简写B、APL是adjustabLe pressure limiting的简写C、APL是air pressure lock的简写D、APL是air pressure lift的简写E、APL是auto pressure lift的简写
synchronized和java.util.concurrent.locks.Lock的比较,描述正确的是() A.Lock不能完成synchronized所实现的所有功能B.synchronized会自动释放锁C.Lock一定要求程序员手工释放，并且必须在finally从句中释放D.Lock有比synchronized更精确的线程语义和更好的性能
已知事务T 1的封锁序列为:LOCK S(A)…LOCK S(B)…LOCK X(C)…UNLOCK(B)…UNLOCK (A)…UNLOCK (C)事务T 2的封锁序列为:LOCK S(A)…UNLOCK (A)…LOCK S(B)…LOCK X(C)…UNLOCK (C)…UNLOCK (B)则遵守两段封锁协议的事务是( ) A.T 1B .T 2C .T 1和T 2D .没有
使用分离器量油时依次打开（）闸门，再缓慢打开井口生产闸门，使油气通过分离器正常生产。A.放空闸门、出油闸门、进油闸门，关闭捷道闸门B.进油闸门、出油闸门、放空闸门，关闭捷道闸门C.出油闸门、进油闸门、捷道闸门，关闭放空闸门D.捷道闸门、放空闸门、进油闸门，关闭出油闸门
The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through．What should you be most concerned with ________．A.A downbound vesselB.An upbound vesselC.Current reaction when the lock chamber is being emptiedD.Current reaction when the lock chamber is being filled
symchronized和java.util.concurrent.locks.Lock的比较，描述正确的是（）A、Lock不能完成symchronized所实现的所有功能。B、symchronized会自动释放锁。C、Lock一定要求程序员手工释放，并且必须在finally中释放。D、Lock比symchronized更精确的线程语义和更好的性能。
Application A currently holds an exclusive lock on a single row and application B tries to access that row. If lock timeout is set to -1 and both applications are using isolation level RS, which of the following will occur?（）A、Applications A and B will cause a deadlock situationB、Application B will read the previous version of the rowC、Application B will read the row and see uncommitted changes made by application AD、Application B will be placed in a lock-wait state until application A releases its lock
User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）A、null lock on the row being updatedB、null lock on the table containing the rowC、ROW SHARE lock for the row being updatedD、ROW EXCLUSIVE lock for the row being updatedE、shared row-exclusive lock for the row being updatedF、a shareable table lock for the table containing the rowG、exclusive table-level lock for the table containing the row
单选题Air blowing from the intake air filter of an operating air compressor indicates （）.Abroken inlet valvesBbroken discharge valvesCpulsations in the air distribution systemDoverloading of the air distribution system
多选题User Scott has updated the salary of one of the employees in the EMPLOYEES table and has not committed the transaction. What are the two types of locks that this scenario would lead to？（）Anull lock on the row being updatedBnull lock on the table containing the rowCROW SHARE lock for the row being updatedDROW EXCLUSIVE lock for the row being updatedEshared row-exclusive lock for the row being updatedFa shareable table lock for the table containing the rowGexclusive table-level lock for the table containing the row
单选题Intercoolers installed on starting air compressors, reduce the possibility of（）Adust entering the high pressure stageBlube oil carbonizationCdischarge pulsationsDinter-stage vapor lock
单选题A backlash below a lock is defined as a（）.Acurrent setting your vessel on the wallBcurrent setting into the lock chamberCan eddy working along the lower guide wallDcurrent setting counterclockwise
单选题All persons or vessels within the lock area，including the lock approach channels，come under the authority of the（）.AdockmasterBdock captainClockmasterDlock foreman
单选题Which type of lock must be granted for the WX device to perform write acceleration on CIFS traffic?（）AoplockBblock lockCbit range lockDbyte range lock
单选题The accumulation of air and other non-condensable gases in a refrigeration system will （）.Acause a loss of the liquid sealBcreate a vapor lock in the liquid receiverCcollect in the condenserDcause foaming of the oil in the crankcase
单选题If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.Acombustion control air systemBsupply air systemCships service air systemDlow pressure deck air system
单选题麻醉机APL阀的意义（）。AAPL是auto pressure lock的简写BAPL是adjustabLe pressure limiting的简写CAPL是air pressure lock的简写DAPL是air pressure lift的简写EAPL是auto pressure lift的简写
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）Anoise coming from that air starting valveBcontinuous operation of the starting air compressorCzero air pressure in the air starting systemDoverheated starting air pipe to the cylinder head
单选题The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）AA downbound vesselBAn upbound vesselCCurrent reaction when the lock chamber is being emptiedDCurrent reaction when the lock chamber is being filled
单选题If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.Acontrol air systemBforced draft air systemCsupply air systemDships service air system