单选题The internal part of boiler should be cleaned by yard if found （）.AscaledBwornCdeformedDrested
单选题
The internal part of boiler should be cleaned by yard if found （）.
A
scaled
B
worn
C
deformed
D
rested
参考解析
解析：
暂无解析
相关考题：
Part ADirections:Suppose you are going to graduate. You want to hold a yard sale before you leave. Write a poster to advertise your sale, providing the following information:1) time and place of the sale,2) items for sale, and3) ways to contact you.You should write about 100 words neatly on ANSWER SHEET 2. Do not sign your own name. Use “Li Ming” instead. (10 points)
You are developing a verification plan for an upcoming OSPF implementation. Part of this plan is to verify the status of type 3 LSAs within the network. Which routers should you verify first to ensure that the configuration s are correct for generating type 3 LSAs?（）A. Internal routers within the backbone area (area 0)B. Internal routers within the NSSAsC. Internal routers within the stubby areasD. ASBRsE. ABRsF. DRs and BDRs
The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to______.A.precipitate(使沉淀) silica （硅石）from solutionB.reduce corrosion in the heating coilC.prevent clogging and erosion in the coilD.maintain zero water hardness
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system ________．A.GuyB.ShroudC.SpiderD.Topping lift
Which statement about the inert gas system is TRUE ________．A.Boiler soot blowers should never be used when the IG system is operatingB.The boiler will produce the best quality of flue gas for the IG system when the boiler load is very lightC.The boiler will produce the most quantity of flue gas for the IG system when the boiler load is very lightD.Flue gas with excessive oxygen content is de-oxygenated in the scrubber
You are developing a verification plan for an upcoming OSPF implementation. Part of this plan is to verify the status of type 3 LSAs within the network. Which routers should you verify first to ensure that the configuration s are correct for generating type 3 LSAs?（）A、Internal routers within the backbone area (area 0)B、Internal routers within the NSSAsC、Internal routers within the stubby areasD、ASBRsE、ABRsF、DRs and BDRs
单选题The safety valves should be tested and adjusted when the boiler survey is （）AcompletedBcarried outCcleanedDsteamed
单选题The pressure difference before and after the lube oil filter indicates （）the filter should be cleaned.AwhenBhowCwhereDwhether
单选题The steam boiler is part of a closed loop steam, whereby, after the energy of the steam is used up and it becomes water again, （） is collected and returned back to the boiler for heating up again to steam.Athe formerBthe firstCthe latterDthe last
单选题What is NOT a function of the steam drum of a marine water-tube boiler（）.AReceives saturated steam from the generating tubesBServes as a reservoir of boiler feed waterCHolds internal fittings for separation of moisture from steamDCollects steam exhausted from the turbines
单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）AThe safety valve escape piping should be disconnected from the valve body and a blank insertedBThe boiler vent valves should be openedCAll hand-hole/manhole covers should be tightened up as much as possible to preclude any leaksDAll of the above
单选题In readying an auxiliary water-tube boiler for a routine hydrostatic test, which of the following procedures should be undertaken prior to filling the boiler with fresh water?（）AThe safety valve escape piping should be disconnected from the valve body and a blank insertedBThe boiler vent valves should be openedCAll handhole/manhole covers should be tightened up as much as possible to preclude any leaksDAll of the above
单选题The water in an auxiliary boiler should be tested daily for （）.Adissolved oxygenBchloridesCsludgeDdissolved nitrogen
单选题Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?（）AThe fire pump should be startedBThe boiler rims should be securedCThe fixed CO2 system should be initiated into actionDThe engine room ventilation should be secured
单选题The internal part of boiler should be welded by yard if found （）.AsealedBcrackedCshape changedDdeformed
单选题The internal part of the boiler, if found （）, has to be chemically washed by yard.AdeformedBrustedCcrackedDscaled
单选题The inner part of the condenser should be cleaned with （）.Agas oilBdiesel oilCchemical compoundDFreon-12
单选题The boiler water alkalinity in a coil-type auxiliary boiler should be maintained at the pH recommended by the boiler manufacturer to（）Aprecipitate silica from solutionBreduce corrosion in the heating coilCprevent clogging and erosion in the coilDmaintain zero water hardness
单选题（） should be tested and adjusted when the boiler survey is carried out.AThe boiler oil tankBThe steam pipeCThe fire sideDThe safety valves
单选题Before an auxiliary boiler is shutdown for an extended period of time, the water in the boiler should have a pH value of （）.A10B7C4D1
单选题Fuel injection valves should be taken out, cleaned, and lifting checked every （）.Atwo to four monthsBfour to six monthsCsix to eight months
单选题The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each（）.AhourBdayCweekDmonth
单选题Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.AGuyBShroudCSpiderDTopping lift