如图表示细胞的有关生理过程.其中,过程②表示细胞的( )
A.分裂
B.生长
C.分化
D.流动
答案:C
Tom did not take away the camera because it was just the same camera _____ he lost last week.
A.as
B.that
C.which
D.whose
锅炉给水泵的压头为()
A、540m水柱
B、544m水柱
C、545m水柱
D、550m水柱