题目内容
楼板的绘制应当是首尾相连的封闭环状。
查看答案
搜索结果不匹配？点我反馈
更多问题
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？
气相色谱分析样品时，其他条件不变，通过调节什么参数提高分离度呢？
微信支付 
支付宝支付