— How's your mum?
— She's _____. [ ]
A. at home
B. in bed
C.OK
D. sorry
答案：C
以下哪个部位的肾上腺外嗜铬细胞瘤可产生肾上腺素
A．腹主动脉旁B．肾门C．肾上极D．膀胱内
简述色温的定义。
