更多"Lubricating oil should be changed o"的相关试题:
[单项选择]The heavy-duty lubricating oil with chemical has been widely introduced in recent years（）
A. additives
B. behavior
C. coolant
D. desiccant
[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]
When centrifuging heavy fuel oil, an important factor to consider is the （）
(1) flow rate
(2) viscosity of the fuel oil
A. (1) only is correct
B. (2) only is correct
C. both (1) and (2) are correct
D. neither (1) or (2) are correct
[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]The safe rate of bunkering heavy fuel oil is directly related to the （）.
A. type of fuel transfer pump aboard
B. temperature of the fuel oil being received
C. size of the fuel storage tanks ashore
D. distance from the fuel oil storage tanks ashore
[单项选择]Injectors for use with heavy fuel oil must be cooled by either water or light oil to （）
A. prevent heat corrosion to internal components
B. increase fuel delivery rate and economy
C. prevent pre-ignition
D. avoid carbonization of the nozzle tips
[单项选择]When the heavy fuel oil is heated to achieve the viscosity of 10-15 cst, may occur.To avoid this, a system is used in most occasions（）
A. boiling and cavitations; low temperature
B. boiling and cavitations; pressurized
C. leaking and boiling; low temperature
D. leaking and boiling; pressurized
[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]Which of the following should be recorded in Oil Record Book Part I (machinery space operation) ?（）
A. Non automatic discharge overboard of machinery space bilge water
B. Automatic discharge overboard of machinery space bilge water
C. A and B
D. Neither A nor B
[单项选择]The primary duty of lube oil is to reduce （） between the working parts of an engine.
A. power output
B. friction and wear
C. indicated pressure
D. rated horsepower
[单项选择]There should be a lubricating oil （） between the main beatings and the crankshaft.
A. film
B. cap
C. lacquer
D. shell
[单项选择]When preparing a ship for heavy weather，fuel oil day tanks should be（）.
A. pumped overboard to calm the seas
B. drained to the lower hull to reduce free surfaces
C. filled to ensure that sufficient fuel oil is available during a lengthy emergency
D. partially drained to increase free surfaces in order to reduce motions
[单项选择]Waste oil should（）
A. be treated according to the C-Es command exactly
B. be treated according to MARPOL
C. accumulate in bilges or on tank tops in accordance with MARPOL
D. discharge to sea at the specified areas
[单项选择]The duty officer and engineer should obey regulation for the speed of the M-E that established by （）
A. captain
B. chief engineer
C. chief engineer and captain consult together
D. chief engineer and superintend consult together
[单项选择]The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.
A. acids
B. additives
C. heat
D. gear
[单项选择]When experiencing heavy winds，you should reef sails to（）.
A. bring the sails parallel to the wind
B. reduce sail area exposed to the wind
C. allow the sails to catch more wind
D. remove all tension on the main and jib sheets
[单项选择]In heavy seas the helmsman should steer the survival craft（）.
A. into the seas
B. broadside to the seas
C. in the same direction as the seas
D. in a series of figure-eights
[单项选择]In heavy seas the helmsman should steer the motor lifeboat（）.
A. into the seas
B. broadside to the seas
C. in the same direction as the seas
D. in a series of figure-eights
[单项选择]In the voyage, duty officer should inform （） situation to the duty engineer immediately.
A. in/ut port
B. passing through big bridge
C. big steering angle for direction changing
D. in/out port and passing through big bridge
