在电子商务中可以利用的电子技术有______。
A．EOS
B．EDI
C．CRM
D．TOC
E．OCR F．FOB
参考答案：A,B
We have many cases where hard work as well as good communication skills have _____ one's
chances of success in the past years. [ ]
A. lessened
B. multiplied
C. combined
D. motivated
根据《中华人民共和国国家标准》火电厂污染物排放标准中有关时间段划分的内容，第3时段火电厂各烟囱SO2最高允许排放浓度为多少？
