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【单选题】
在用效益成本分析法进行技术改造方案优化选择时，当率（ ）时，方案可以考虑接受。A.
＞1
B.
＝1
C.
＜1
D.
≥1
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皮皮学刷刷变学霸
举一反三
【判断题】Thomas Malory was he first English short-story teller, the first to bring the atmosphere of romantic interest and the daily work to his poetry, the first to use heroic couplet and the first to be buri...
A.
正确
B.
错误
【判断题】Chaucer was he first English short-story teller, the first to bring the atmosphere of romantic interest and the daily work to his poetry, the first to use heroic couplet and the first to be buried wit...
A.
正确
B.
错误
【简答题】实验原理(简述实验用原理,画出实验电路图)
【单选题】关于“乡饮酒礼”,以下说法不正确的是()。
A.
“乡饮酒礼”是周代很多时候举行的一次典礼。
B.
“乡饮酒礼”这套典礼是很繁重的。
C.
“乡饮酒礼”这一套典礼开始后，客人不需要注意太多的礼仪。
D.
“乡饮酒礼”是一种有韵律的活动。
【判断题】中学化学实验是由实验原理和实验物质(试剂)、实验条件、实验装置、实验操作等要素组成的有机整体(系统)，实验结果是该系痛的必然产物，不在要素之列。()
A.
正确
B.
错误
【单选题】The first great cliché of the Internet was 'Information wants to be free.' The notion was that no one should have to pay for 'content' words and pictures and stuff like that and, in the friction-free ...
A.
information should be free in cyberspace.
B.
content on the Web should be paid for.
C.
the laws of economics are not applicable to cyberspace.
D.
the laws of economics are as outdated as the laws of gravity.
【简答题】打印出 3到 100 之间的全部素数( 提示: 判 断 素数由 自定义 函数实现 , 由主函数调用该函数 )。
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