更多"Which of the following operating pr"的相关试题:
[单项选择]Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）
A. Lubrication to the defective cylinder should be increased
B. Cooling water temperature to the engine should be increased
C. Only the turbocharger speed should be reduced
D. Engine speed should be reduced
[单项选择]Which of the following operating conditions can occur when shims are removed from the joint between the foot of a marine type diesel engine connecting rod and the bearing box?（）
A. Decreased connecting rod bearing clearance
B. Increased connecting rod bearing clearance
C. Decreased compression ratio
D. Increased compression ratio
[单项选择]
Which of the following operating features do displacement pumps bear if they are working under no-cavitation condition?（）
(1) output is almost directly proportional to speed
(2) they are self-priming
(3) they will develop a discharged pressure equal to the resistance to be overcome, irrespective of speed
A. （1）and（2）
B. （2）and（3）
C. （1）and（3）
D. （1），（2）and（3）
[单项选择]Which of the following relationships should occur between the temperature developed in a combustion space, and the compression ratio of the engine?（）
A. Higher compression ratios create higher temperature
B. Higher temperatures create higher compression ratios
C. low temperatures create higher compression ratios
D. Higher compression ratios create low temperatures
[单项选择]Which of the following precautions should always be carried out in dry dock?（）
A. Liquids should never be transferred between tanks without consulting the dock master
B. If sea valves have been disassembled, all bonnets must be checked for leakage when the ship is re-floated
C. Before re-floating, all sea chest strainers should be verified as having been replaced
D. All of the above
[单项选择]Which of the following actions should normally be taken during each watch when the auxiliary boilers is in operation?（）
A. clean the flame scanner photocell window
B. Inspect and clean all solenoid valves
C. lift the safety valves by hand
D. Inspect for oil or water leaks
[单项选择]Which of the following steps should normally be taken first by those who have boarded a liferaft in an emergency situation?（）
A. Ration food and water supplies
B. Search for survivors
C. Determine position and closest point of land
D. Check pyrotechnic supplies
[单项选择]Which of the following actions should be taken if during a routine maintenance inspection of a centrifugal pump, localized scoring on a pump shaft sleeve is detected?（）
A. Correct the cause of the scoring and repair the sleeve or replace with a new one
B. Reassemble the unit and provide more water leak off for proper lubrication
C. Check for parallel alignment of the sleeve radial faces to the sleeve bores
D. Reassemble the unit and adjust the governor to obtain a slower speed
[单项选择]Which of the following problems should be taken when cleaning the air filter on a diesel engine equipped with a turbocharger?（）
A. Reduce engine speed to idle before removing the filter
B. Soak the dirty filter in kerosene only
C. Blow out the air inlet with compressed air
D. Cover the air inlet after removing the filter
[单项选择]Which of the following actions should be taken by the engine room watch when the general alarm is sounded continuously?（）
A. The fire pump should be started
B. The boiler rims should be secured
C. The fixed CO2 system should be initiated into action
D. The engine room ventilation should be secured
[单项选择]All of the following operating characteristics are listed on the name-plates of motors used aboard ship except the（）
A. temperature rise
B. input kilowatts
C. horsepower
D. operating voltage
[单项选择]The company should establish procedures by which（）receive relevant information on the safety management system in working language or language understood by them.
A. New personnel
B. The ship's personnel
C. Personnel transferred to new assignments
D. Visitor
[单项选择]Which of the following procedures decreases the total dissolved solids concentration in the water of an auxiliary boiler?（）
A. Hydrazine treatment of condensate
B. Frequent compounding
C. Chemical cleaning
D. Bottom blowing
[单项选择]Which of the following should not be paid attetion to as to accommodation for seafarers?（）
A. The size of rooms and other accommodation spaces
B. communication
C. Heating and ventilation
D. Noise and vibration and other ambient factors
[单项选择]Which of the following should always be checked prior to starting a diesel engine?（）
A. Air filters
B. Fuel oil strainers
C. Crank case oil level
D. Pyrometer readings
[单项选择]Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?（）
A. Pre-lube cylinders with hand cranks
B. Open all air space drain cocks
C. Open all indicator valves
D. All of the above
[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]Which of the following should be the FIRST step in removing a generator from parallel operation?（）
A. Trip the generator off the switchboard
B. Turn off all electrical equipment
C. Remove the load from the "off going" generator
D. Increase the cycles of the generator staying on the line
