问题
选择题
—Wow,so many beautiful cars ! I don't know which one to buy.
—Any way,you have to_________.[ ]
A. make up
B. make up your mind
C. make up you mind
D. make up mind
答案
答案：B
搜题请搜索小程序“爱下问搜题”
—Wow,so many beautiful cars ! I don't know which one to buy.
—Any way,you have to_________.[ ]
A. make up
B. make up your mind
C. make up you mind
D. make up mind
答案：B
2NH3(g)，673 K，30 MPa下n(NH3)和n(H2)随时间变化的关系如下图所示。