—Is it ________ backpack?
—No, it isn't.[ ]
A. he
B. she
C. her
答案：C
皮瓣移转术后为保证其存活，最不应当忽略的措施是( )
A．妥善包扎
B．可靠固定
C．观察血运
D．防止感染
E．患肢抬高
