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单选题
If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）
A
a cracked cylinder liner
B
clogged intake ports
C
broken piston rings
D
a faulty head gasket
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更多 “单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）A a cracked cylinder linerB clogged intake portsC broken piston ringsD a faulty head gasket” 相关考题
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A.looks … cameB.looked … was comingC.is looking … cameD.looks … is looking
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An indication of an overloaded main propulsion diesel engine is( ).A.white smoke in the exhaustB.high exhaust gas pyrometer readingsC.sparks in the exhaustD.blue smoke in the exhaust
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Engine operating conditions may be indicated by the color of the exhaust smoke Black smoke could indicate .A.an insufficient speed droop settingB.an overloaded engineC.clogged drain holes in the oil control ringsD.complete combustion
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Immediately after any diesel engine is started, the engineer should check the ______.A.crankcase pressureB.lube oil pressureC.saltwater pressureD.exhaust temperature
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In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.A.low firing pressureB.low exhaust temperatureC.mechanical knock in each cylinderD.fuel knock in each cylinder
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请阅读Passage 2，完成第小题。
Passage 2
NBA centre Jason Collins recently announced he was gay in a cover story for Sports
Illustrated. In other words, he"came out of the closet." This expression for revealing one's homosexuality may seem natural. Being in the closet implies hiding from the outside world, and the act of coming out of it implies the will to stop hiding. But though the closet has long been a metaphor for privacy or secrecy, its use with reference to homosexuality is relatively recent.
According to George Chauncey's comprehensive history of modern gay culture, Gay New York, the closet metaphor was not used by gay people until the 1960s. Before then, it doesn't appear anywhere"in the records of the gay movement or in the novels, diaries, or letters of gay men and lesbians."
"Coming out," however, has long been used in the gay community, but it first meant something different than it does now."A gay man's coming out originally referred to his being formally presented to the largest collective manifestation of prewar gay society, the enormous drag balls that were patterned on the debutante and masquerade balls of the dominant culture and were regularly held in New York, Chicago, New Orleans, Baltimore, and other cities." The phrase"coming out" did not refer to coming out of hiding, but to joining into a society of peers. The phrase was borrowed from the world of debutante balls, where young women"came out" in being officially
introduced to society.
The gay debutante balls were a matter of public record and often covered in the newspaper, so"coming out" within gay society often meant revealing your sexual orientation in the wider society as well, but the phrase didn't necessarily carry the implication that if you hadn't yet come out, you were keeping it a secret. There were other metaphors for the act of hiding or revealing homosexuality. Gay people could "wear a mask" or "take off the mask". A man could "wear his hair up" or "let his hair down", or "drop hairpins" that would only be recognized by other gay men.
It is unclear exactly when gay people started using the closet metaphor, but "it may have been used initially because many men who remained 'covert' thought of their homosexuality as a sort of'skeleton in the closet'." It may also have come from outsiders who viewed it that way. It seems that"coming out of the closet" was born as a mixture of two metaphors: a debutante proudly stepping into the arms of a community and a shocking secret being kept in hiding. Now. the community is the wider community, and the secret is no longer shocking,"Coming out" is a useful phrase, but it need not imply a closet.
What is the main idea of this passage?
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A．The phrase "coming out" is used in gay community.
B．The phrase "coming out" means revealing of homosexuality.
C．The meaning of the phrase "coming out" has not changed.
D．The development of the use of "coming out".
考题
单选题While maneuvering, you discover heavy smoke coming from the turbocharger casing, you should （）A
check the air filter for dirtB
check for an exhaust leakC
check the cooling water temperatureD
notify the bridge that you are going to shut the engine down
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单选题While loading bulk oil, you notice oil on the water near the bargeWhich of the following actions should you carry out FIRST?（）A
Search the vessel for leaksB
Notify terminal superintendentC
Stop loadingD
Notify the Coast Guard
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单选题A diesel engine emits blue exhaust smoke as a result of（）A
cold intake airB
excessive compression pressureC
excessive cylinder lubricationD
a light load
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单选题The exhaust system of a diesel engine is usually designed to remove exhaust gases and to （）A
provide exhaust back pressureB
prevent exhaust smoke emissionsC
power a reciprocating superchargerD
muffle exhaust gas noise
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单选题Engine operating conditions may be indicated by the color of the exhaust smoke.Black smoke could indicate（）A
an insufficient speed droop settingB
an overloaded engineC
clogged drain holes in the oil control ringsD
complete combustion
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单选题The forced draught fan should be started and air passed through the furnace for several minutes to “（）” it of any exhaust gas or oil vapors.A
blowB
cleanC
scavengeD
purge
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单选题You notice smoke coming from an open laundry room doorway．After activating the fire alarm，which of the following would you do FIRST（）.A
Attempt to determine what is burningB
Acquire the nearest self contained breathing apparatusC
Break out the nearest fire hoseD
Wait for the fire team to arrive and assist as directed
考题
单选题In a diesel engine, blow-by（）A
increase exhaust back pressureB
causes excessive crankcase pressureC
can only be detected by a compression checkD
decreases fuel consumption
考题
单选题In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）A
low firing pressureB
low exhaust temperatureC
mechanical knock in each cylinderD
fuel knock in each cylinder
考题
单选题The crankcase of many diesel engines are kept under a slight vacuum by the （）.A
scavenging action of the pistonB
piston type vacuum pump taking suction off a differential manometerC
gland exhausting manometerD
crankcase exhaust fan
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单选题You detect oil around your tank vessel while discharging. The first thing to do is（）.A
try to find out where the oil is coming fromB
call the masterC
have the pumpman check the discharge pipingD
shut down operations
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单选题Indications of （）are loss in power and irregular running of the engine, high exhaust temperatures of corresponding unite, high local temperature in scavenge trunk, surging of turbocharger, and sparks and smoke emitted from scavenge drains.A
a crankcase explosionB
a scavenge fireC
abnormal compression ratio
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单选题Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and （）A
low exhaust temperatureB
low firing pressureC
fuel knock in each cylinderD
mechanical knock in each cylinder
考题
单选题If you notice smoke coming fro the crankcase exhaust fan outlet of an operating diesel engine, you would suspect（）A
a cracked cylinder linerB
clogged intake portsC
broken piston ringsD
a faulty head gasket
考题
单选题Late fuel injection in a diesel engine is indicated by low firing pressure with （）A
low exhaust temperatureB
low exhaust pressureC
mechanical knock in each cylinderD
black or gray exhaust smoke
考题
单选题If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）A
check the air filter for obstructionB
check for an exhaust leakC
check the exhaust temperatureD
secure the engine
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单选题Which of the routine maintenance procedures listed is required for starting air receivers?（）A
over-speedingB
overloadC
low exhaust temperatureD
high crankcase pressure
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单选题A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under loadThe load suddenly increases, causing excessive black exhaust smoke, and a rapid rise in the lube oil temperatureIn response to this condition, you should:（）A
reduce loadB
check your exhaustC
adjust cooling water temperatureD
increase lube oil flow
考题
单选题An indication of an overloaded main propulsion diesel engine is （）A
white smoke in the exhaustB
high exhaust gas pyrometer readingsC
sparks in the exhaustD
blue smoke in the exhaust
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