【判断题】一般来说,市内零星货物运杂费、采购人员的差旅费、采购机构的经费以及供应部门经费等,都不应当包括在存货的采购成本中
【简答题】阅读短文, 回答问题。 It was a long holiday. We left Beijing on February lst and got to Harbin on the 2nd. On the first day, I went to a park with my parents. On the 3rd, I went skiing. On the 4th, I did my hom...
【简答题】用非退化线性替换,化下面实二次型为标准型,并写出非退化线性替换。
【简答题】系统 为____(填“线性”或“非线性”)、____(填“时变”或“非时变”)系统。
【简答题】选词填空。 was had did went plane saw got to swimming bought took It __________ a long holiday. We left Beijing on May 1st and __________ Hainan on the 2nd. On that day, I ______...
【判断题】判断以下系统是否是线性、非时变的系统,是选择正确,否选择错误
【单选题】某连续系统输入、输出关系为 ,该系统为_____。
【简答题】听录音,选出你所听到的句子,将序号填在前面括号里。 ( ) 1. A. What do you usually do on your holiday? B. What did you do on your holiday? ( ) 2. A. I went to Shanghai. B. I went to Beijing. ( ) 3. A. What did you d...