Youaredevelopinganapplicationthatwillperformmathematicalcalculations.Youneedtoensurethattheapplicationisabletoperformmultiplecalculationssimultaneously.Whatshouldyoudo？（）
A. SettheIdealProcessorpropertyoftheProcessThreadobject.
B. SettheProcessorAffinitypropertyoftheProcessThreadobject.
C. Foreachcalculation，calltheQueueUserWorkItemmethodoftheThreadPoolclass.
D. SettheProcess.GetCurrentProcess（）.BasePrioritypropertytoHigh.
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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。（)
“楷书四大家”是欧阳询、严真卿、柳公权和赵孟频。（)
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