胆囊癌小结节型与胆固醇息肉的鉴别,支持前者的主要依据是
A.病灶基底宽阔,直径>1.5cm
B.病灶基底较窄
C.胆囊壁不光滑
D.发生于胆囊颈部
E.病灶单发
参考答案:A
Don’t worry about me too much, mom. I think I’m __________ to finish the work by myself.
A.enough old
B.enough young
C.old enough
D.young enough
一般的性能劣化大体分为性能降低型和()两种形式。