当泵轴上装有两个叶轮时,泵的总流量为两个叶轮的流量之和
错误
暂无解析
Hepaidtheboy$10forwashingtenwindows,mostof____hadn'tbeencleanedforatleastayear.
题目：CongratulationLetter祝贺与慰问
Ioftenthoughtofmychildhood,____Ilivedonafarm.
-“Youfinallymadeit,didn'tyou?”
-“Yes，____yourhelp,Iwouldn'thavesucceeded.”
Healthcarebenefits