输血治疗的唯一依据是()。
A.真正的临床需要
B.患者及家属的一再要求
C.临床医生免责
D.人情血的输注
E.作为安慰剂使用
参考答案:A
She felt completely during the vacation but now she has to go back to her work again.
A.at sea
B.at ease
C.at a loss
D.at risk
将代表年各月流量()系数K,即得设计年径流的时程分配。
A.乘以
B.除以
C.加上
D.减去