水泵发生汽蚀现象后,只会引起振动和噪音,不影响流量和扬程
错误
暂无解析
Workthroughlunch
Marywasthegirl____(在初中我和她一起看电影的)。
Thisisthesong____IoftenlistenintheGlobleDanceHall.
Thetimehascome_____wemakeextensiveuseofnuclearenergy.
Thereisno( )betweenthenations.