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【单选题】
古希腊时期,雕塑家( )创作了著名的作品《掷铁饼者》。[湖北美术学院2005年研]A.
菲狄亚斯
B.
C.
波利克列特斯
D.
萨摩特雷斯
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举一反三
【单选题】Which of the combustion parameters listed is used in a diesel engine, but NOT related to the injection system?
A.
Atomization
B.
Metering
C.
Effective stroke
D.
Penetration
【简答题】一个算法的时间复杂性是算法 的函数。
【单选题】In a diesel engine, offers the heat energy directly; works as working medium and changes the heat energy to mechanical energy.
A.
the burning of the fuel; medium shaft
B.
fuel spray; fresh air
C.
fuel; fuel spray
D.
the burning of the fuel; the burned gas mixture
【单选题】In a diesel engine, an integral liner is one in which the cooling water __________Iflows through the cylinder liner jackets Ⅱ.touches the outer side of the liner
A.
I only
B.
Ⅱ only
C.
both I and Ⅱ
D.
neither I and Ⅱ
【单选题】The most serious effect of air trapped in a diesel engine jacket water cooling system is that it ______．
A.
Causes colloid suspension in the cooling water
B.
Reduces the capability of the lubrication system
C.
Can form pockets which block the flow of coolant through the system
D.
Leads to the scuffing of cylinder walls
【单选题】One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an .
A.
decrease in ignition lag
B.
increase in fuel economy
C.
reduction in lube oil viscosity
D.
increase in cylinder misfiring
【简答题】Technician A says that the ignition system in a diesel engine uses an ignition coil to increase the low voltage of the battery t0 20,000 volts or more in order to create a spark across the spark plug ...
【简答题】80年代散文的特色与价值。
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