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【单选题】
从所采用的交换技术来看,因特网属于下列哪一类网络( )。A.
电路交换；
B.
分组交换；
C.
文档交换；
D.
报文交换；
手机使用
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新浪微博
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反馈参考答案：
举一反三
【简答题】应当按照操作规程对纯化水、注射用水管道进行清洗消毒,并有相关记录。 发现制药用水微生物污染达到____、____时应当按照操作规程处理。
【判断题】Shopping can reduce stress, communicate with friends and keep fit for women.
A.
正确
B.
错误
【单选题】在SCIE数据库中检索废水中苯酚的降解研究，最佳检索式为：
A.
TS=(("waste water" or wastewater) and degradat*)
B.
TS=(("waste water" or wastewater) and phenol and degradat* and stud*)
C.
TS=(("waste water" or wastewater) and phenol and degradat*)
D.
TS=(phenol and degradat*)
【单选题】The most significant technology that can reduce barriers to Internet access is:
A.
electronic data interchange (EDI)
B.
digital subscriber lines (DSL)
C.
wireless Web technology
D.
shopping bot programs
【简答题】Businesses can gain many potential benefits from engaging in electronic commerce. E-commerce can reduce the c_1_(成本)of purchases, lower sales and m_2_营销 costs and i_3__(改善)the customer service. Howev...
【简答题】Shopping can help people reduce stress, communicate with friends, and even _____ (keep) fit.
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