下列结构属于鼓室的迷路壁(内侧壁),除外()
A.鼓岬
B.鼓窦
C.卵圆窗
D.蜗窗
E.面神经管凸
参考答案:B
As nobody here knows what is wrong with the machine, we must send for an engineer to ______ the problem.
A.handle
B.raise
C.face
D.present
简述病毒基因组的特点。