可能的原因是
A．补液过多
B．补液不足
C．急性肾衰
D．心力衰竭
E．升压药无效
参考答案：B
There seems to be little chance___ Jack will recover from his injury in time for the race.
A．what
B．which
C．that
D．if
折流板一般应按（）间距布置。
A.等
B.不等
C.任意
