【C19】A．relianceB．reliabilityC．relevancyD．reference

【C19】A．advantageB．exceptionC．measureD．charge

【C19】A．relianceB．reliabilityC．reliefD．relevancy

层流流动的Re数满足（)。A、Re2000B、Re5000C、2000Re10000D、Re20000

回答（59）题 查看材料A.creativityB.reliabilityC.intellig

【C2】A．relianceB．impressionC．affectionD．impact

【C9】A．priorityB．reliabilityC．demandD．variety