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【简答题】
创建一个student表,字段信息为id 整型字段,name字符串类型且非空,grade浮点类型,根据字段类型中添加1条新记录。
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【简答题】He is incredibly well organized.(翻译)
【简答题】请扫描上传办公空间的平面图
【单选题】A full moon was shining down on the jungle. Accompanied only by an Indian guide, the American explorer and archaeologist Edward Herbert Thompson-- thirteen hundred years after the Mayas had left their...
A.
had been abandoned by the Mayas about thirteen hundred years previously
B.
had been occupied and developed by the Mayas about thirteen hundred years before
C.
had been deserted by the Mayas as soon as the Spaniards arrived
D.
was conquered by the Mayas thirteen hundred years ago
【简答题】已知硫铁矿的主要成分是FeS 2 （铁元素呈+2价，硫元素呈—1价）。以下是分析硫铁矿中FeS 2 含量的三种方法，各方法的操作流程图如下： 请同答下列问题： (1)流程图中操作①、②、③分别指的是：①____________、②___________、③________。 操作④、⑤用到的主要仪器是：④_________、⑤__________(每空填1～2个仪器)。 (2)判断溶液中SO 4 ...
【简答题】Being organized is an important skill for school and life．When you’re well organized, you can stay focused, instead of spending time hunting things down． 小题1: For schoolwork, it means having one noteb...
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