【简答题】以下对网络商务信息的分级叙述正确的是()。 [A]第一级是免费商务信息,主要是社会公益性的信息 [B]第二级是收取较低费用的信息,只收取基本的服务费用 [C]第三级是收取标准信息费的信息 [D]第四级是优质优价的信息,网络商务信息大部分属于这一范畴电子商务法律与法规
【单选题】_____ your advice, I would have had no trouble with my papers.
【判断题】在Preo5.0软件阵列命令中对原特征进行编辑,阵列生成的特征不会一起变化。
【单选题】in your position,I would help him. [ ]
【多选题】录入固定资产卡片数据时,以下哪些项目是必填项?( )。
【单选题】I could have helped the old man ______ yesterday morning.
【单选题】time tomorrow, I would teach you how to play the piano.
【单选题】I would have met him ______ to the cinema last night.