A、Continuous fibers
B、chopped strands
C、fabrics
D、mats
A、Continuous fibers
B、chopped strands
C、fabrics
D、mats
A、their mechanical strength are too low.
B、Boron fibers are expensive.
C、Boron fibers is hard to process into composite.
D、Boron has a tendency to react with other metals
B.Once property rights are assigned,people can reach negotiations to make best use of resources,no matter how many people are affecteD
C.We must take into account which of the two parties is given the property right.
D.It is the best way to solve the external costs.
为了保护您的账号安全,请在“简答题”公众号进行验证,点击“官网服务”-“账号验证”后输入验证码“”完成验证,验证成功后方可继续查看答案!