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【单选题】
电子商务信息的最终承载者,位于整个业务技术结构最底层的是( )。A.
电子商务支付体系层
B.
电子商务应用层
C.
网络基础设施层
D.
电子商务安全基础体系层
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反馈参考答案：
举一反三
【简答题】He moved out of his newly-decorated house, because he ____________(对油漆味敏感).
【判断题】电控汽油发动机的控制原理是:以电脑为控制核心,以空气流量和发动机转速为控制基础,以喷油器、点火器和怠速空气调整器为控制对象,保证获得与发动机各种工况相匹配的最佳混合气成分和点火时刻。
A.
正确
B.
错误
【简答题】简答电控发动机对喷油量的控制原理。
【单选题】When he moved to Germany in _____ , he was already in _____ . [ ]
A.
the 50s; his sixty
B.
the 50s; his sixties
C.
50s; his sixties
D.
50s; his sixty
【简答题】As John moved his bicycle out of the driveway, he heard his mo m shout, “Don’t forget to lock it!” He thought to himself that she was such a 36 . Really, what could 37 at that little library in...
【单选题】He moved his glass violently as he spoke and some of the beer still remaining in it______ on to the floor.
A.
overflowed
B.
fell
C.
poured
D.
spilt
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