在临床医学研究前，对无行为能力的病人要获得他家属的同意，这属于（）
A.代理同意
B.知情同意
C.不同意
D.诱导同意
E.有效同意
参考答案：A
The little girl _____ her heart out because she _____ her toy bear and believed she wasn't ever
going to find it. [ ]
A. had cried ; lost
B. cried ; had lost
C. has cried ; he lost
D. cries ; had lost
制冷剂在蒸发器中流动在完全汽化前（）不增高。
A．焓值
B．比容
C．干度
D．温度
