问题 填空题

正常运行时,发电机内氢压高于水压,当发电机内氢压下降到仅高于进水压力()时报警。

答案

参考答案:0.035MP(1)

探究题

       2007年12月4日将是圆明园罹难147周年纪念日,假如我们穿越了时光隧道作为火烧圆明园的见证人,你怎样用简练醒目的文字,富于感情的语言向世人报道这段历史。(不能照抄课本原文,否则扣分。)

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

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