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【判断题】
连接数据库是 一件既消耗资源又费时的工作,如果频繁发生,系统的性能必然会急剧下降。A.
正确
B.
错误
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举一反三
【简答题】Part 2. All you need is love? A. Keywords: social backgrounds, race, ethnic, religion Vocabulary: pre-industrial, propose, criterion You are going to hear a report on how people in different parts of ...
【简答题】You are going to hear a report on how people in different parts of the world choose their mates. A1. Before listening, think about some of the qualities you would look for in a mate. A2. As you listen...
【简答题】You are going to hear a report on how people in different parts of the world choose their mates. A1. Before listening, think about some of the qualities you would look for in a mate. A2. As you listen...
【单选题】对高危人群进行检查以发现和诊断早期肺癌，最常用的方法是（）
A.
经胸壁穿刺活组织检查
B.
放射性核素扫描检查
C.
胸部X线检查
D.
痰细胞学检查
E.
支气管镜检查
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