离心泵能够输送液体,主要是依靠叶轮的轴向力而使液体获得能量来提高压强
错误
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It’snecessary_________usallto________
Mr.Greenisusedto_________twoapplesafterluncheveryday.
-“Youfinallymadeit,didn'tyou?”
-“Yes，____yourhelp,Iwouldn'thavesucceeded.”
Theredcolorcanstimulateallour____,includingappetite.
题目：Describinggraphs