A . Clogged air intake falters
B . Piston blow-by
C . A defective after-cooler
D . Faulty exhaust valve
[单选题]Which of the following conditions will make a relation that is in first normal form. to be in second normal form?Ⅰ.every non-key attribute is functionally dependent on the full set of primary key attributes.Ⅱ.no non-key attributes exist in the relati
[单选题]Which of the following conditions is realized by the turbo-charging of a previously naturally aspirated diesel engine?A.Ignition lag increases.B.Lube oil system pressure increases.C.Brake specific fuel consumption increases.D.Mechanical efficiency in
[单选题]Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?A.The mixture is too lean to burnB.The mixture is too rich to burnC.The vapor is about to explodeD.Conditions are perfect for
[单选题]Which of the following conditions could contribute to the cracking of a diesel engine cylinder head?A.Leaking seal ringB.Insufficient heat transfer from the exhaust valvesC.Blocked cooling water passages to the headD.Excessive scavenging air provided
[单选题]Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?()A . Increased suction head pressureB . Decreased feedwater temperatureC . Pump recirculating line being open too muchD . Excessive feedwater tempera
[单选题]Which of the listed conditions can be considered as the single greatest cause of accidents?A.SpeedB.Excessive knowledge or skillC.Human errorD.Excitement
[单选题]Which of the listed conditions can be considered as the single greatest cause of accident?A.SpeedB.Excessive knowledge or skillC.Human errorD.Excitement
[单选题]Which of the following conditions may contribute to the formation of deposits on the blades of the turbocharger turbine?()A . Poor combustionB . High cylinder oil consumptionC . Leaking exhaust valvesD . All of the above
[单选题]Which of the following conditions may need to be reduced when operating a large, low speed, main propulsion, diesel engine at low loads?()A . Injection pressuresB . Control air supply pressureC . Cooling water flow through after-coolersD . Lube oil t
[单选题]Which of the following can be a disadvantage of search agents?A. Lack of counseling.B. Limited number of visits.C. Lower efficiency. D Fewer successful matches.