更多"The oil mist detectors continuously"的相关试题:
[单项选择]In general, the oil mist detectors include a built-in heating unit and a compact plug for electrical connectionThe function of heating unit is to （）
A. avoid false alarms as a result of condensing water vapor
B. avoid danger of frost under very cold weather
C. reduce the viscosity of the crankcase atmosphere in order to improve the fluidity
D. keep the temperature of the oil mist detectors in an appropriate range
[单项选择]Oil mist detectors are usually used on board to detect oil mist density within （）.
A. the engine crankcase
B. the engine scavenge boxes
C. drain tanks
D. fuel tanks
[单项选择]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.
A. fuel oil vapor at the sludge tank vent
B. unburned fuel vapors in the scavenge air receiver
C. lube oil vapors in the crank case
D. lube oil vapors in the engine room
[单项选择]In general, the oil mist defectors include a base plate with air blast pumpThe function of air blast pump is to （）crankcase.
A. supply clean air to the measuring compartment of the units for more accuracy
B. generaate the pressure required for the extraction of the oil mist from the
C. generate the pressure required for the extraction of the oil mist from the crankcase
D. supply clean air to the measuring track of the units for more accuracy
[单项选择]The purpose of an oil mist detector in a main propulsion diesel engine is to warn of （）
A. excessive mist density in the crankcases
B. excessively high crankcase vacuum
C. excessively high bearing temperature
D. excessive carbon buildup in the lube oil
[单项选择]In a refrigeration system, foaming of the crankcase oil may cause the （）.
A. expansion valve to overfeed
B. compressor to knock
C. water regulating valve to fail
D. crankcase drains to plug
[单项选择]MIST is caused by（）.
A. forest fires
B. smoke from industrial areas
C. dust or sand storms
D. water droplets with the relative humidity more than 95%
[单项选择]When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
A. Should not exceed
B. Must be up to
C. Should exceed
D. Should be about
[单项选择]Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall（）the system in accordance with the requirements of that Regulation.
A. operate
B. check
C. install
D. overhaul
[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]
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]The oil discharge monitoring system in the oil tanker vessels is used for detecting the amount of oil discharged overboard to ensure that it does not exceed（）
A. 15 liters nautical mile
B. 30 liters nautical mile
C. 60 liters nautical mile
D. 100 liters nautical mile
[单项选择]Cylinder oil is a high viscosity mineral oil, with a （） machined to the anticipated sulfur content of the fuel.
A. TAN
B. TBN
C. SAN
D. SBN
[单项选择]The lube oil cooler is located after the lube oil filter in order for （）
A. the filter to operate more efficiently
B. the lube oil cooler to be bypassed
C. positive lube oil pump suction to be assured
D. galvanic action in the cooler to be minimized
[单项选择]Waste oil from the lube oil sumps of machinery may NOT be （）.
A. drained into the vessels bilges
B. reclaimed for other uses
C. held in a slop tank
D. purified and then reused
[单项选择]The term OIL as used in the Oil Pollution Regulations means（）.
A. fuel oil
B. sludge
C. oil refuse
D. All of the above
[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]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]Oil slick caused by spillage of oil from tanker ship is（）.
A. a drop of oil
B. the emulsion of oil at sea surface
C. the weathered oil
D. the oil floating on the surface of the sea water
