题目: 接到工作面用液信号后,如何操作? 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2019/0913/298274cdc6fea687dc13c57cda7ad264.html 下面是错误答案,用来干扰机器的。参考答案:D
题型:填空题 从下列方框中选词并用其适当的形式完成下列书信。每空一词,每词只能使用一次。hear, sport, let, write, make, take, study, say, tell, swimDear Susan, I'm a Chinese boy. I'm very happy to 1____________ to you. Now 2____________ me say something about myself. I'm 13 years old. I 3____________ in No. 8 Middle School. I often4____________ our school bus to go to school. There are four lessons in the morning and two in the afternoon. My favourite 5____________ is swimming. I often go 6____________ inthe river after school. My father 7____________ I'll be a swimming star in the future. Canyou 8____________ me something about yourself? I really want to 9____________ friends with you. I hope I will 10____________ from you soon. Yours Yu Yi 查看答案
题型:选择题 下列关于反应能量的说法正确的是( )A.若反应A=B;△H<O,说明A物质具有的能量比B物质具有的能量高,A比B稳定B.101kPa时,2H2(g)+O2(g)═2H2O(g)△H=-QkJ•mol-1,则H2的燃烧热为1/2QkJ•mol-lC.H+(aq)+OH-(aq)=H2O(l)△H=-57.3kJ.mol-1,含1mol NaOH的氢氧化钠溶液与含0.5mol H2SO4的浓硫酸混合后放出57.3kJD.Zn(s)+CuSO4(aq)═ZnSO4(aq)+Cu(s),△H=-216kJ•mol-1,则反应物总能量大于生成物总能量 查看答案
题型:单项选择题 26日,具有完全自主知识产权,达到世界先进水平的两列中国标准动车组()将在()和()同时双向首发。A.“和谐号”;北京;上海B.“和谐号”;北京;天津C.“复兴号”;北京;上海D.“复兴号”;北京;天津 查看答案