下述哪项不是鼻咽癌放疗后CT表现()
A.鼻咽壁肌肉水肿、增厚
B.咽隐窝变浅
C.鼻咽腔扩大
D.鼻窦炎
E.乳突炎
参考答案:A
磷霉素的抗菌机制为()。
A.阻止N-乙酰胞壁酸形成
B.影响胞质膜中磷酸脂循环
C.抑制转肽酶的转肽作用
D.抑制细菌核酸合成
E.抑制细菌蛋白质合成
-- I heard a student killed his mother cruelly.
-- So did I. It has ____ a serious problem about the education system in China.
A.taken up
B.made up
C.pulled up
D.brought up