病案对临床研究与临床流行病研究具有（）.
A.监督作用
B.教学作用
C.实践作用
D.纪录作用
E.备考作用
参考答案：E
The adoption of orphans and physically challenged children has been a subject of public
debate _____ a fire in an unregistered orphanage last month.
A．according to
B．in case of
C．ever since
D．such as
带式输送机包括：机头部、托辊及机架、机尾部、输送带、拉紧装置、清扫装置等部分。
