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挥发油（Volatile oils）
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下面一组中都是C语言关键字的是______。A．double Int forB．main while gotoC．volatile break staticD．malloc sizeof new
考题
Volatile:a) What does the keyword volatile mean? Give an exampleb) Can a parameter be both const and volatile? Give an examplec) Can a pointer be volatile? Give an example
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The pour point of lubricating oils is affected the most by which of the following?A.Extensive centrifugingB.Wax contentC.Water contentD.Acid content
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Before any machinery is put in operation，you should ______.A.ventilate all compartments，see that the machinery is clean and there are no obstructionsB.just turn the key and start upC.take for granted that there are no fuel leaksD.assume there are no volatile fumes in the engine space
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volatile关键字的说法错误的是（）。A、能保证线程安全B、volatile关键字用在多线程同步中，可保证读取的可见性C、JVM保证从主内存加载到线程工作内存的值是最新的D、volatile能禁止进行指令重排序
考题
单选题Halon fire extinguishers are NOT effective when used on which types of fires?（）A
Fires in electrical equipmentB
Flammable oils and greasesC
Class A fires in ordinary combustiblesD
Materials containing their own oxygen
考题
单选题In large marine diesel engines cylinder oils usually contain additives formulated to impart the （） to clean the rings and grooves.A
inefficiencyB
oilinessC
detergencyD
purity
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单选题The treatment of the fuel oils involves storage, heating, filtering and（）A
centrifugingB
pressurizingC
atomizationD
igniting
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单选题To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of （） and detergency.A
salinityB
alkalinityC
acidD
sanitary
考题
单选题Which cargo is considered volatile（）.A
Bunker CB
Turkey-red oilC
Sweet oilD
Iso-Propylamine
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单选题Emulsion oils and sodium nitrite are both approved additives, but the latter cannot be used if any pipes are （） or if any soldered joints exit.A
chromedB
weldedC
galvanizedD
bolted
考题
单选题Emulsion oils and sodium nitrite are both approved additives, but （） cannot be used if any pipes are galvanized or if soldered joints exist.A
the latterB
latterC
formerD
the former
考题
单选题Those generally used additives for cooling water are either anti-corrosion oils or inorganic（）.A
gasesB
paintsC
inhibitorsD
detergent
考题
单选题Sludge formation in a diesel engine lube oil system is caused by（）A
carbonization of oils from the combustion chambersB
emulsions of lube oil and waterC
coagulation of unburned fuel below the piston ringsD
all of the above
考题
单选题Before any machinery is put in operation，you should（）.A
ventilate all compartments，see that the machinery is clean and there are no obstructionsB
just turn the key and start upC
take for granted that there are no fuel leaksD
assume there are no volatile fumes in the engine space
考题
单选题（） fuel oils （） lubricating oils require treatment before passing to the engine.A
Both；andB
Neither；norC
Either；orD
Both；or
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