更多"One method of determining crankshaf"的相关试题:
[单项选择]Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）
A. Check the tag to see when the extinguisher was last charged
B. Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptable
C. Weigh the extinguisher and compare the weight against that stamped on the valve
D. Recharge the extinguisher at least once each year
[单项选择]The best method of determining if a vessel is dragging anchor is to note（）.
A. the amount of line paid out
B. how much the vessel sheers while at anchor
C. any change in the tautness of the anchor chain
D. changes in bearings of fixed objects onshore
[单项选择]The most accurate method of determining gyrocompass error while underway is by（）.
A. Comparing the gyro azimuth of a celestial body with the computed azimuth of the body
B. Comparing the gyro heading with the magnetic compass heading
C. Determining from the chart the course made good between celestial fixes
D. It cannot be determined accurately at sea due to drift of unknown currents
[单项选择]The simplest method to use for determining if a centrifugal pump is operating as designed, is to （）.
A. closely observe the pump discharge temperature
B. close off the discharge valve, and watch for a rise in pressure
C. momentarily close off the suction valve, and watch for a rise in pressure
D. use a clamp on ammeter and compare the readings to past records
[单项选择]One method of constructing large marine diesel engines and reducing the total engine frame weight is through （）.
A. casting interlocking components
B. welding plates to form sections for assembly
C. forging integral components
D. case hardening integral components
[单项选择]One method of controlling rats on vessels is by rat-proofing. Rat-proofing is accomplished by （）.
A. installing rat guards on the mooring lines when in port
B. keeping foods protected and avoiding the accumulation of garbage
C. eliminating possible living spaces for rats when the ship is constructed
D. trapping and/or poisoning the rats
[单项选择]Misalignment of the drive shaft and propeller shaft flanges can be detected by using a dial indicator or （）.
A. inside micrometer
B. feeler gauge
C. adjustable trammel
D. sighting device
[单项选择]One method of reducing the length of radio transmissions without distorting the meaning of your words is by using（）.
A. slang
B. secret codes
C. procedure words
D. analogies
[单项选择]The crankshaft receives and transmits the full working power of the engine and is subjected to fluctuating （）.
A. bending stresses弯曲应力
B. torsion stresses扭转应力
C. shear stresses剪应力
D. All of the above
[单项选择]On a large diesel engine installation, crankshaft axial alignment is maintained by the （）
A. piston rod guides
B. engine thrust bearing
C. crosshead bearing
D. main shaft flexible coupling
[单项选择]The bearings used to support the crankshaft are generally called （）
A. line shaft bearings
B. connecting rod beatings
C. main bearings
D. support bearings
[单项选择]Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be（）
A. placed as near the crankpin axis as possible
B. removed each time the crankshaft is repositioned
C. left in place for all four readings
D. reset to zero for all four readings
[单项选择]The crankshaft is of the semi built type, with the journal （） the forged or cast steel crank throws.
A. being shrunk into
B. to be shrunk into
C. to be shrunk with
D. shrinking into
[单项选择]The crankshaft deflection is at first to be （） before and after repair.
A. disassembled
B. renewed
C. measured
D. regulated
[单项选择]How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）
A. One
B. Two
C. Four
D. Eight
[单项选择]
A crankshaft whose center of gravity coincides with its center line is said to be（）
Ⅰ.statically balanced
Ⅱ.dynamically balanced
A. Ⅰ only
B. Ⅱ only
C. both Ⅰ and Ⅱ
D. neither Ⅰ nor Ⅱ
