全血中所含血液成分()
A.较全
B.不全不纯不是一个治疗剂量
C.含各种成分
D.主要为有形成分
参考答案:B
--- I wonder if I could pay the bill by check.
--- ______. The card machine has just broken down.
A.No problem
B.Take your time
C.Never mind
D.I’m sorry
坝体混凝土为何要分区?