债券年利息收入与债券面额之比率称为（）。 ["票面收益率","持有期收益率","到期收益率","利息收益率"]
液压支架倾倒的预防措施有。（） ["严格执行液压支架的操作规定","正确使用较大倾角工作面支架配用的防倒装置","及时调整支架支撑状态不合要求的液压支架","及时处理煤壁片帮及局部顶板冒落"]
Which cisco collaboration service will encourage true customer intimacy by quickly and proactively connecting people with the information, expertise and support that they need?（） ["telepresence","messaging","conferencing","customer care","ip communicatio"]
自我意识是主体对自己的（）。 ["控制","基本看法","改造","意识"]
电子自动订货系统（EOS）
配送
