下列哪项不是血液稀释的适应证（）
A.采集自体血
B.大量失血和休克
C.颅内压增高
D.换血疗法
E.体外循环
参考答案：C
. She _____ on this essay for twenty minutes but she has written only about a hundred words.
A．will be working
B．worked
C．has been working
D．will have worked
高原铁路关口列检作业场和终到站列检作业场货物列车的技检时间如何规定如下？
