影像学表现不是浸润性肺结核常见征象的是()
A.肺部病变位于下叶背段
B.虫蚀样空洞
C.球形病灶
D.结核球在CT增强时增强明显
E.胸腔积液
参考答案:D
— Is _____ here?
— No, Mary has asked for leave. [ ]
A. all
B. someone
C. anyone
D. everyone
你如何理解国际贸易惯例对合同当事人的约束力问题?