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气密闸门 air lock
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更多 “气密闸门 air lock” 相关考题
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
考题
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
考题
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
考题
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
考题
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 ________．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
考题
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。
考题
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
考题
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？（）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
考题
单选题Air blowing from the intake air filter of an operating air compressor indicates （）.A
broken inlet valvesB
broken discharge valvesC
pulsations in the air distribution systemD
overloading of the air distribution system
考题
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
考题
单选题Intercoolers installed on starting air compressors, reduce the possibility of（）A
dust entering the high pressure stageB
lube oil carbonizationC
discharge pulsationsD
inter-stage vapor lock
考题
单选题A backlash below a lock is defined as a（）.A
current setting your vessel on the wallB
current setting into the lock chamberC
an eddy working along the lower guide wallD
current setting counterclockwise
考题
单选题All persons or vessels within the lock area，including the lock approach channels，come under the authority of the（）.A
dockmasterB
dock captainC
lockmasterD
lock foreman
考题
单选题Which type of lock must be granted for the WX device to perform write acceleration on CIFS traffic?（）A
oplockB
block lockC
bit range lockD
byte range lock
考题
单选题The accumulation of air and other non-condensable gases in a refrigeration system will （）.A
cause a loss of the liquid sealB
create a vapor lock in the liquid receiverC
collect in the condenserD
cause foaming of the oil in the crankcase
考题
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 （）.A
combustion control air systemB
supply air systemC
ships service air systemD
low pressure deck air system
考题
单选题麻醉机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
考题
单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）A
noise coming from that air starting valveB
continuous operation of the starting air compressorC
zero air pressure in the air starting systemD
overheated starting air pipe to the cylinder head
考题
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? （）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
考题
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 （）.A
control air systemB
forced draft air systemC
supply air systemD
ships service air system
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