更多"Which of the listed conditions can "的相关试题:
[单项选择]Which of the listed conditions can cause a diesel engine to use too much lube oil?（）
A. Dirty lube oil filter
B. Too much piston ring wear
C. High lube oil viscosity
D. Low lube oil temperature
[单项选择]Which of the conditions listed would cause simultaneous high cylinder firing pressure and low exhaust temperature?（）
A. Improper fuel rack positioning
B. Lengthy opening of the exhaust valve
C. Excessively early injection timing
D. Extended light load operation
[单项选择]Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）
A. Plugged injector nozzles
B. Excessive fuel injection
C. Very late injection timing
D. Incorrect crankshaft clearance
[单项选择]Which of the conditions listed will cause a refrigeration compressor to run constantly without simultaneously decreasing the temperature in the refrigerated space?（）
A. Shortage of refrigerant oil
B. Slight shortage of refrigerant
C. Excessive condenser cooling water flow
D. Faulty expansion valve
[单项选择]Which of the listed problems can be a cause of low compression pressure in a diesel engine?（）
A. clogged air filter
B. compression stroke
C. burned exhaust valves
D. all of the above
[单项选择]Which cause of the following can lead to the engine not to start on air?（）
A. starting air pressure too high
B. correct timing of starting air valves
C. three of the starting valves stuck
D. the turning gear disengaged
[单项选择]Which of the listed conditions will cause the feed water that has not flashed to vapor in the first-stage of a flash evaporator, to flow into the second-stage?（）
A. Gravity siphon effect
B. Higher vacuum in the second-stage
C. Difference in brine density between first and second stages
D. lower pressure in first-stage
[单项选择]Which of the listed operations will cause an automatically controlled refrigeration compressor to restart?（）
A. Closing of the solenoid valve
B. Closing of the expansion valve
C. An increase in the suction pressure
D. Decreasing the suction pressure
[单项选择]Which protocol can cause overload on a CPU of a managed device?（）
A. Netflow
B. WCCP
C. IP SLA
D. SNMP
[单项选择]Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?（）
A. Sludge
B. Gasoline
C. Fuel oil
D. Lube oil
[单项选择]Which of the listed characteristics can be applied to R- 12 vapor?（）
A. It is corrosive
B. It is odorless
C. It is visible as h blue fog
D. It has a distinctive taste
[单项选择]Which of the listed conditions can lead to cavitation气穴in a centrifugal pump?（）
A. Vapor pockets formed in the suction flow stream
B. Rough easing volute surfaces
C. Worn wearing rings
D. Heavy fluid in the flow stream
[单项选择]Which of the listed chemicals can be routinely used to maintain the hygienic quality of potable water?（）
A. Hydrochloric acid
B. Chlorine
C. Sulfuric acid
D. Zinc chromate
[单项选择]Under which of the listed conditions can the engine room retake the throttle control from the bridge（）.
A. Any time it is deemed necessary
B. Only with the masters permission
C. After a 10 minute delay to the input command
D. Only after the throttle has been placed in stop
[单项选择]Which of the listed conditions can be considered as the single greatest cause of accidents?（）
A. Speed
B. Excessive knowledge or skill
C. Human error
D. Excitement
[单项选择]The three conditions which cause engine shutdown are overspeed，low lube oil pressure，and（）.
A. High lube oil pressure
B. High jacket water pressure
C. High jacket water temperature
D. Low jacket water pressure
[单项选择]The total magnetic effects which cause deviation of a vessel’s compass can be broken down into a series of components which are referred to as（）.
A. divisional parts
B. coefficients
C. fractional parts
D. equations
[单项选择]Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? （）
A. Viscosity is decreased
B. Octane number is altered
C. Pump speed is decreased
D. Blower’s speed is decreased
[单项选择]Which cause of following will not lead to refrigeration plant short-cycle?（）
A. lack of refrigerant
B. refrigerant with much water
C. set defectively low pressure relay
D. no cooling water
