达尔文是英国生物学家,进化论的奠基人,他的代表著作是《物种起源》,
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Youaredevelopinganapplicationthatwillperformmathematicalcalculations.Youneedtoensurethattheapplicationisabletoperformmultiplecalculationssimultaneously.Whatshouldyoudo?()
A. SettheIdealProcessorpropertyoftheProcessThreadobject.
B. SettheProcessorAffinitypropertyoftheProcessThreadobject.
C. Foreachcalculation,calltheQueueUserWorkItemmethodoftheThreadPoolclass.
D. SettheProcess.GetCurrentProcess().BasePrioritypropertytoHigh.
Youneedtoselectaclassthatisoptimizedforkey-baseditemretrievalfrombothsmallandlargecollections.Whichclassshouldyouchoose?()
A. OrderedDictionaryclass
B. HybridDictionaryclass
C. ListDictionaryclass
D. Hashtableclass
北宋时期,人们发明了用人工磁化铁针的方法,制成指南针,并开始应用于航海。()
蒸汽机的发明及应用,是人类第一次科技革命的标志。()