题目内容
执行如下程序段，运行结果是____。int k=8;if (k<=0)if (k==0)printf("aaa");elseprintf("bbb");elseprintf("ccc");
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楼板的绘制应当是首尾相连的封闭环状。
可以用竖井的方式在楼板上开洞口。
You may choose two questions to answer as the followings. The answers should be marked the orders.1.According to the content, write down the key words or phrases you have heard.2.Try to write down some sentencesyou have heard. (At least 5 sentences)3.Try to make a conlusion or the main ideayou have heard.(The answer could be either English or Chinese)
气相色谱与液相色谱相比，下列哪些有机化合物可以采用GC分析呢？
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