玻璃纤维增强塑料中哪个加固材料最常见普通?
应该是碳 我有八成把握!B
Which one of the following is the most common reinforcing material in FRPs?
Which one of the following is the most common reinforcing material in FRPs?
A.Al2O3
B.carbon
C.cobalt
D.graphite
E.Kevlar 49
F.SiO2
A.Al2O3
B.carbon
C.cobalt
D.graphite
E.Kevlar 49
F.SiO2
英语人气：195 ℃时间：2020-05-09 05:45:37
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