在水击现象的第一阶段里,当t=l/c时全管中的水都停止下来,且处于增压状态。()
A. remains
B. remain
C. thing
D. matter
A. throw to
B. throw to
C. throw at
D. throw away
串联管的水击计算一般可通过等价水管法简化成简单管路进行计算。()
A. to mix
B. at mixing
C. mixing
D. mixed
A.他汀类
B.依达拉奉
C.吡拉西坦
D.胞二磷胆碱