流體與管道內表面間， 因存在相對運動而產生摩擦阻力所導致的能耗是
A、局部水頭損失D
暫無解析
Modern（）perhapscausesmoreproblemsthanitsolves.
WhichofthefollowingitalicizedwordsDOESNOTcarrythemetaphoricalmeaning?
Hesetupinbusiness（）hisownandwasverysuccessful.
Our（）sensitivitydecreaseswithage.Byage60，mostpeoplehavelost40percentoftheirabilitytosmelland50percentoftheirtastebuds.
GreatasNewtonwas,manyofhisideas____todayandarebeingmodifiedbytheworkofscientistsofourtime.
