—__________?
—It's behind the chair. [ ]
A. What is it
B. Where is it
C. Who is it
答案:B
在其他因素一定的条件下,边际贡献率与应收账款占用资金成反比。()
《灵枢·百病始生》说,风雨袭虚,则病起于______,清湿袭虚,则病起于______。