the litmus paper turns blue when the solution is a base 当溶液是?的时候石蕊试纸会变蓝这里的base指的是什么?base本意里有显色剂的意思,还是碱性的意思.因为常识知道碱性物质使石蕊变蓝.

the litmus paper turns blue when the solution is a base 当溶液是?的时候石蕊试纸会变蓝这里的base指的是什么?base本意里有显色剂的意思,还是碱性的意思.因为常识知道碱性物质使石蕊变蓝. different between blue litmus and red litmus writing on paper还是on the paper fold the paper type the paper THE PAPER CHASE怎么样 英语翻译4) desulphurization5) hazard warning label 6) hydrochloric acid 7) litmus paper8) nitric acid 9) nitrogen oxides 10) pH paper 11) pH scale 12) sodium hydroxide 13) sulphur dioxide14) sulphuric acid 15) universal indicator 德文 “Tur offen 问道改错题,英语高手进来啊.请给解析.谢拉括号里面是有错误的地方,请问怎么改正丫!1.(Alike) bases which cause litmus to turn blue,acids cause litmus to turn red.2.The amino acids serve as the building (block) of protent write on the paper 还是write in the paper? RESET THE PAPER中文是什么意思 fold the paper 否定句 The flower is made (.) paper who is the paper tiger? paper jam tray .pull the paper tray out of the machine ,than remove the jammed paper 英语翻译tur luck chan mai? 剪纸是cut the paper 还是 cut paper on paper与in the paper的区别