根据我国民事诉讼法的规定，以下说法正确的是： A．当事人对已经发生法律效力的判决、裁

根据短文内容，从方框中选出能填入空白处的最佳选项。(选项中有两项为多余选项) Saying Goodbye Many people were waiting for the train. Some were reading newspapers and some were saying goodbye to their friend． Doctor Smith, Mr. Lee and Mr. Brown were talking so happily that ____16____ Then the guard called loudly, “The train is going to leave. ____17____ The three men heard the guard and two of them jumped onto the train quickly before it moved. One was left behind. It was Dr. Smith. He ____18____ The guard came to him and said, “Don’t worry. ____19____ ”“I know.” Dr Smith said，“ ____20____ My friends only came to say goodbye to me. ” A. But it is my train. B. they didn’t know the train was going to leave. C. was very excited. D. Hurry up, please. E. looked very sad. F. The next train will come in ten minutes. G. Take your time.

（1）如图所示为某元素的结构示意图，则x的数值为______，该元素属于______（填“金属”“非金属”或“稀有气体”）．

（2）Na和Na⁺属于同种元素，是因为______，但Na和Na⁺的化学性质不同，是因为______．

其他石棉或石棉混合物制的服装

根据《中国电信广东公司运营工作规则》，规章制度的制定应遵循哪些程序？

安全防护用品、用具（）进行试验，使用前进行外观检查