皮下蒂皮瓣(subcutaneous pedicle skin flap)
参考答案:
是指所作的皮瓣其蒂部为皮下组织,经过转移修复另一部位之缺损。
生物体之间通过食物链可传递()。
A.能量
B.物质
C.有机物
D.无机物
E.物质和能量
My sister bought me a new camera. I don't know ______. Can you help me? [ ]
A. how to use it
B. how to use
C. what to use
D. what to use it