悬浮固体(Suspended Solids )
悬浮固体(Suspended Solids )
相关考题：
When during separation solids and water accumulate in the solids holding space, the iquid seal is displaced to the bowl A.interfacerB.brimC.peripheryD.center
Damage to cargo caused by fumes or vapors from liquids，gases，or solids is known as ______.A.contaminationB.oxidationC.taintingD.vaporization
采用活性污泥进行污水处理时，混合液悬浮固体浓度是重要指标。下列关于混合液悬浮固体浓度的说法中，哪项错误？( )A.普通活性污泥系统混合液悬浮固体浓度，是指反应池内的混合液悬浮固体浓度平均值B.阶段曝气活性污泥法系统混合液悬浮固体浓度，是指反应池内的混合液悬浮固体平均浓度C.吸附—再生活性污泥法系统混合液悬浮固体浓度，是指吸附池和再生池内的混合液悬浮固体平均浓度D.完全混合式活性污泥法系统混合液悬浮固体浓度，是指反应区内的混合液悬浮固体平均浓度
You execute the following command to enable a session in resumable mode： SQL ALTER SESSION ENABLE RESUMABLE TIMEOUT 60; What is the impact of a timeout on the statements being suspended？（）A、The statements remain suspended for at least 60 seconds.B、The statements are suspended for 60 seconds and then they are executed.C、The suspended statements error out if the problem is not rectified within 60 seconds.D、The statements are automatically suspended 60 seconds after an error is received， and then attempt to execute normally again.
You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUT parameter set to a nonzero value.Which three statements about resumable space allocation are true? （）A、Even with resumable space allocation enabled for your database, you can disable resumable space allocation for a single session.B、A resumable statement is suspended only if an out of space error occurs. （Out of space condition Maximum extents reached condition，Space quota exceeded condition）C、When a resumable statement is suspended, the transaction that contains the statement is also suspended.D、A resumable statement can only be suspended and resumed once during the execution of the statement.E、You can query the V$SESSION_WAIT dynamic performance view to identify the statements that are suspended for a session.
You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUTparameter set to a nonzero value.Which three statements about resumable space allocation are true? （）(Choose three.)A、Even with resumable space allocation enabled for your database, you can disable resumable space allocation for a single session.B、A resumable statement is suspended only if an out of space error occurs.C、When a resumable statement is suspended, the transaction that contains the statement is also suspended.D、A resumable statement can only be suspended and resumed once during the execution of the statement.E、You can query the V$SESSION_WAIT dynamic performance view to identify the statements that are suspended for a session
单选题You execute the following command to enable a session in resumable mode： SQL ALTER SESSION ENABLE RESUMABLE TIMEOUT 60； What is the impact of a timeout on the statements being suspended？（）AThe statements remain suspended for at least 60 seconds.BThe statements are suspended for 60 seconds and then they are executed.CThe suspended statements error out if the problem is not rectified within 60 seconds.DThe statements are automatically suspended 60 seconds after an error is received， and then attempt toexecute normally again.
单选题Static electricity may be built up by the（）.Aflow of petroleum through pipesBspraying or splashing of petroleumCsettling of solids or water in petroleumDAll of the above
单选题For many years marine centrifuges were designed for （） operation, that is the machines were run for a period during which solids accumulated in the bowlThe machine was stopped when the accumulated solids began to impair its performance.ApurifyingBbatchClong periodDtemporary
单选题Damage to cargo caused by fumes or vapor from liquids,gases, or solids is known as（）.AcontaminationBoxidationCtaintingDvaporization
单选题A （）, sometimes called filters, is a device designed to prevent the passage of unwanted solids into the system.Asteam trapBcheck valveCseparatorDstrainer
单选题What is TRUE about hoisting operations（）.APersonnel may work beneath suspended loads，as long as they are alert and wear hard hatsBIf a suspended load with no tag begins to spin，personnel should attempt to stop the spinning if the load is within reachCIf tag lines are used to control a suspended load，they should be secured to the deckDPersonnel not involved in the hoisting operation should be kept clear of the transfer area
单选题Bottom blow valves are installed on auxiliary water-tube boilers to （）Aremove suspended and precipitated solids from the boiler waterBcompletely drain the boiler in an emergency situationCprevent hardened scale deposits in the water drumDremove floating impurities from the oily water surface
单选题The traffic lane（）suspended.AhasBhaveChas beenDhave been