大肠粪石症可发生于大肠的任何部位，常见的部位为（）
A.乙状结肠
B.盲肠
C.直肠
D.降结肠
E.横结肠
参考答案：C
The（）is a collection of modules serving as interface between hardware and software to provide a software platform.
A．computer
B．processor
C．application software
D．operating system
货币政策的含义是什么？
