【多选题】下列各项,属于企业留存收益的有 ( )。
【简答题】Write a composition of at least 150 words about the topic: A Way to Success. Read the following article in Chinese, then write according to the outline given below. Write your composition on the Answe...
【判断题】机床夹具 一 般已标准化、系列化,并由专门厂家生产。