更多"A centrifugal fuel oil purifier sho"的相关试题:
[单项选择]High-speed rotation in a centrifugal purifier can produce a force （） the force of gravity.
A. many thousand times larger than
B. the same as
C. many thousand times smaller
D. none of the above
[单项选择]High-speed rotating in a centrifugal purifier can produce a force （） larger than the force of gravity.
A. many thousand times
B. between times
C. one time
D. at times
[单项选择]If the bowl of a disk type centrifugal purifier when operated as a separator is not primed, the（）
A. oil has a tendency to emulsify in the bowl
B. purifier will act as a clarifier at the discharge ring
C. oil will be lost through the water discharge ports
D. oil solids will be deposited only at the intermediate top disk
[单项选择]Machinery driving fuel oil transfer and fuel oil service pumps must be fitted with a remote means of stopping the machinery from （）.
A. within the space concerned
B. outside the space concerned
C. the throttle station
D. within the fire room
[单项选择]An automated diesel engine should normally shut down due to （）
A. low lube oil temperature
B. high ambient air temperature
C. low tube oil pressure
D. high exhaust system back pressure
[单项选择]The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated （）
A. for atomizing
B. for centrifuging
C. in a storage tank
D. in the re-circulating line
[单项选择]When separating fuel oil in oil separator, the separating quantity is（） of the real quantity.
A. 100%
B. 80%
C. 1/2
D. 1/3
[单项选择]The（） should be shut once upon FWE.
A. fuel oil
B. cooling water
C. air compressor
D. auxiliary blower
[单项选择]After taking on fuel oil, the hoses should be disconnected and （）.
A. draped over the fantail to dry out
B. drained over the side and washed out
C. drained into the bilges and washed out
D. drained into buckets or fuel tanks
[单项选择]Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.
A. cold corrosion of the nozzles
B. fuel viscosity for better atomization
C. carbon accumulation on the nozzles
D. fuel detonation in the cylinders
[单项选择]
When fuel oil is accidentally missed with lube oil which of the following processes can be used to separate them?（）
Ⅰ.filtering
Ⅱ.settling
A. Ⅰ only
B. Ⅱ only
C. either Ⅰ or Ⅱ
D. neither Ⅰ or Ⅱ
[单项选择]How often should the lubricating oil of a diesel engine be changed?（）
A. After every trip
B. Every 4000 hours
C. According to manufacturer’s instructions
D. Every time they are shutdown
[单项选择]Diesel engine lube oil diluted with fuel oil is indicated by（）
A. decreased viscosity
B. decreased pour point
C. increased flash point
D. increased viscosity
[单项选择]In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.
A. a service tank
B. a settling tank
C. an expansion tank
D. a double bottom tank
[单项选择]In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.
A. a service tank
B. a collecting tank
C. a sump
D. a settling tank
[单项选择]Diesel engine fuel oil contamination often results in （）
A. governor malfunctions
B. fuel injection system malfunctions
C. high cylinder lube oil temperatures
D. low intake temperatures
[单项选择]One engine manufacturer recommends heavy fuel oil should not be heated above 80℃ to 95℃ (176 ℉ TO 203℉) before purificationThis upper limit should be observed to ensure against（）
A. flattening of the bowl neoprene O-rings
B. operation within the explosive rang of the fuel
C. excessive purifier operating pressures
D. excessive oil viscosity
[单项选择]After "F.W.E" is given, the air system is shut down, the （） gear put in, all drains and indicator cocks opened, and the cooling water kept running.
A. steering
B. timing
C. turning
D. running
