制造触摸屏的重要材料之一是氧化铟(In2O3),其中铟元素(In)的化合价为( 发布时间:2017-05-22 20:23 │ 来源:www.tikuol.com 题型:选择题 问题: 制造触摸屏的重要材料之一是氧化铟(In2O3),其中铟元素(In)的化合价为( )A.+1B.+2C.+3D.+6
题型:选择题 Don't sit on the red chair. There _______________ on it. [ ]A. is some waterB. are some waterC. is any waterD. are any water 查看答案
题型:选择题 Roots have the ability to ______A.make proteinsB.obtain fresh airC.produce inorganic nitrogenD.carry out activities without energy 查看答案