单选题Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.Adispersant；detergentBdetergent；dispersantCdispersant；dispersantDdetergent；detergent
单选题
Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.
A
dispersant；detergent
B
detergent；dispersant
C
dispersant；dispersant
D
detergent；detergent
参考解析
解析：
暂无解析
相关考题：
__________the coffee, Mr. Johnson washed the cup and put it away. A.Having drankB.DrinkingC.After drankD.Having drunk
The dead body of a huge fish has been( )on the shore. A. washed upB. washed awayC. wash upD. wash away
The mometn the author got down to the river bank he saw .A．the calf was about to fall into the riverB．Ma Shwe was placing the calf on the rockC．the calf was washed away by the rising water
The wall was built to _______ the road from being washed away by the sea. A.guardB.promiseC.defendD.barrier
The term-loan agreement specifies a draw-down period of, say, up to two years, during which the funds must be used by the borrower; otherwise the borrower is not allowed to draw down any unused credit.A．RightB．WrongC．Doesn't say
Spontaneous communication and free interaction are possible in any language only when teachers and their students have built up a warm, uninhibited, confident sympathetic relationship and when such a relationship also exists among the students themselves. In the first lessons no such state of affairs exists as yet. The teacher's efforts from the beginning should be devoted to building up such relationships through enjoyable, successful experiences in using interesting and amusing segments of language in a multiplicity of ways.
In the presence of an open flame or hot surfaces, chlorinated flourocarbon refrigerants decomposes and form .A.petroleum crystalsB.phosgene gasC.water vaporD.carbon monoxide
The three basic components of a fire are chain reaction, heat, fuel, and ____.A.carbon monoxideB.oxygenC.carbon dioxideD.any gaseous substance
According to Harry Morrison, businesses .A．will benefit from cutting carbon emissionsB．should buy carbon allowances for shoppersC．are required to make up for their carbon emissionsD．have encouraged shoppers to take their custom elsewhere
A liferaft which has inflated bottom-up on the water ______.A.should be righted by standing on the carbon dioxide cylinder，holding the righting straps and leaning backwardsB.should be righted by standing on the life line，holding the righting straps leaning backwardsC.will right itself when the canopy tube inflatesD.must be cleared of the buoyant equipment before it will right itself
Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when ______．A.vessels nearer the distress vessel acknowledge receiptB.vessels nearer the distress vessel fail to acknowledge receiptC.even you have not received the distressD.even the vessel in distress expressly prohibit you from providing any salvage service
湿货要远离干货。（）A、Wet cargo must be kept away from dry cargo.B、Heavy cargo must be kept away from dry cargo.C、Light cargo must be kept away from dry cargo.D、Wet cargo must be kept away from light cargo.
You have just reinstalled a VIP 6-80 in a Cisco 7500 Series router. What must you do to bring up the port adapter interfaces?（）A、All interfaces are online by default once the VIP is up and running normally.B、All interfaces must be manually brought online, even those previously configured.C、The previous VIP configuration must be reloaded to bring interfaces online.D、Any interfaces not previously configured must be manually configured and brought online.
单选题To function properly, oil control rings used on a diesel engine piston must distribute sufficient oil to all parts of the cylinder wall and must also（）.Aprevent any lubricant from reachingBprevent excessive lubrication from reaching the combustion spaceCProvide metal-to-metal contact to seal the cylinder against blow-byDassure a positive means of scraping carbon accumulation from the cylinder
单选题Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an （）.Asmall wire brushBcompressed air jetCclean dry clothD10% solution carbon solvent and water
单选题The way to reduce （） is to build up a film of lubricant between any two surfaces that rub against each other.AfrictionBcollisionCinertiaDresistance
单选题On every vessel，distress signals must be stowed（）.Aon or near the navigating bridgeBon the flying bridge not closer than 15 feet to any bulkheadCabove the freeboard deck away from heatDin an enclosed space below the freeboard deck away from heat
单选题Generally the function of lubrication is to form of a film of lubricant between any two surfaces that have relative （）, so that surfaces dont get touch with each other.AgravityBmotionCratioDdensity
单选题How are riveted lap joints made watertight（）.AThe faying surfaces are coated with white lead（or similar product）before the rivets are setBA sealing weld bead of 1/8 or less pitch is run along the plate edgeCThe plate edge is split close to an adjacent plate and mechanically forced into contact with the adjacent plateDA properly riveted joint will be watertight; any leakage is stopped by setting up on the rivets
单选题（） will be used to blow away soot and the combustion products from the tube surfaces.AThe blow down valveBThe scum valveCThe air release cockDScot-blower
单选题The travelers were _____ to find that the bridge had been washed away.AdismayedBprejudicedCpromptedDquestioned
单选题Any carbon built up on surfaces must be washed away by （） additives and held in suspension by a （） additive.Adispersant；detergentBdetergent；dispersantCdispersant；dispersantDdetergent；detergent
单选题Before reassembling any machinery, you should （）.Areplace all bearings regardless of length of serviceBapply a heavy coat of oil to all mating surfacesCclean any corroded surfaces and file all burrs smoothDcoat all parts with alemite grease
单选题Jane was fairly good at English, but in mathematics she could not ______ the rest of the students in her class.Aput up withBdo away withCkeep up withDrun away with
单选题Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.AVessels nearer the distress vessel acknowledge receiptBVessels nearer the distress vessel fail to acknowledge receiptCEven you have not reveived the distressDEven the vessel in distress expressly prohibit you from providing any salvage service