铬络合物经过水解,由原来的()络合物变为()络合物,最后成为()的沉淀。
参考答案:非碱式;碱式;氢氧化物
Who would you rather ______ with the teacher about the problem?
A.talking
B.talk
C.have talked
D.have talk
磨合的作用是什么?