更多"Which of the listed substances can "的相关试题:
[单项选择]Which of the substances listed is satisfactorily removed from the fuel by a centrifugal oil purifier?（）
A. Carbon particles
B. Lube oil
C. Gasoline
D. Diesel fuel
[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 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]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]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 listed conditions can cause lacquer to be deposited on a piston skirt?（）
A. High sulphur content fuel
B. High lube oil temperatures
C. High vanadium content fuel
D. Excessive piston slap
[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 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 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 of the following is not a factor which can interfere with the pulse of sound and cause a variation the depth reading?（）
A. salinity
B. temperature
C. the hydrostatic pressure
D. Vessel’s speed
[单项选择]Which can be prevented only by segregating two lots of cargo into separate holds? （）
A. Contamination of dry cargo by a wet cargo
B. Contamination of a clean cargo by a dirty cargo
C. Contamination of a food cargo by an odorous cargo
D. Overcarriage，overstowage，and short landing
[单项选择]What is the substance called which can readily be converted from a liquid into a vapor, and also from a vapor into liquid with a reasonably narrow range of pressure?（）
A. Refrigerator
B. Refrigerant
C. Cooling medium
D. Brine
[多项选择]Which can be done to secure the virtual terminal interfaces on a router?（）
A. Administratively shut down the interfaces.
B. Physically secure the interfaces.
C. Configure a virtual terminal password and login process.
D. Enter an access list and apply it to the terminal interfaces using the access-class command.
E. Create an access list and apply it to the terminal interfaces using the access-group command.
[单项选择]The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
A. controls the amount of gasoline to the engine
B. shuts off the gasoline supply at the tank
C. is used if the gasoline tank leaks
D. All of the above
