更多"Such an engine frame helps （） the e"的相关试题:
[单项选择]In the two stroke diesel engine, it is designed so that the oil impingement is timed to proceed only on the piston ring belt during（）
A. compression stroke
B. suction stroke
C. expansion stroke
D. exhaust stroke
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A. at each control station
B. in the chief engineer’s quarters
C. in the captains quarters
D. All of the above are correct
[单项选择]A diesel engine is similar to a gasoline engine except that the former has no （）.
A. cross-head
B. cylinder
C. connecting rod
D. spark plug
[单项选择]A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.
A. as much fuel as
B. less fuel than
C. less fuel as
D. more fuel than
[单项选择]Before starting an engine by air, the engine must（）
A. be turned by a turning gear for at least one minute
B. be turned by a turning gear for at least two minutes
C. be turned at least one complete turn
D. be turned at least two complete turns
[单项选择]（） the engines, the diesel engine is（） used engine on board.
A. Between；more commonly
B. Among；the most commonly
C. Between；not more commonly
D. Among；not the most commonly
[单项选择]Which command helps a network administrator to manage memory by displaying flash memory andNVRAM utilization?（）
A. show secure
B. show file systems
C. show flash
D. show version
[单项选择]Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.
A. operated manually once an hour
B. operated until the engine has started
C. placed into operation only at maximum load
D. adjustable to meet lubrication requirements
[单项选择]Diesel engine mufflers accomplish noise reduction by （）
A. reducing exhaust gas velocity
B. increasing the frequency of gas vibration
C. the use of long head pipes
D. the use of zinc electrodes
[单项选择]Precision engine bearing inserts are manufactured with a small portion of the bearing ends extending beyond the bearing housing or capsThe installation process of these bearings requires sufficient （）.
A. overlap
B. crush
C. lap or lead
D. protrusion
[单项选择]Internal combustion engine crankcase vent outlets must be equipped with （）
A. hinged rain guards
B. corrosion resistant flame screens
C. dipsticks for measuring oil levels
D. crankcase ventilation fans
[单项选择]An engine compartment gasoline fire requires which type of extinguisher?（）.
A. Carbon dioxide
B. Dry chemical
C. Foam
D. All of the above
[单项选择]Engine room is（）fire.
A. on
B. in
C. at
D. out
[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]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
