为严重贫血病人输血，最好输[ ]
A．血浆
B．浓缩的血小板悬液
C．全血
D．浓缩的红细胞悬液
答案：D
In those days, few people liked taking a bus, _____? [ ]
A. didn't they
B. did they
C. don't they
D. were they
流动比率并非越高越好。流动比率越高，说明流动资产相对于流动负债太多，可能是存货积压，也可能是持有现金太多，或者两者兼而有之。
