【简答题】Which of the following is not the requirement for matrix used in composites? A) Ability to adhere to the fibers B) Higher stiffness compared with reinforcement C) No significant chemical reaction betw...
【简答题】听力。 1. What are the speakers discussing? [ ] A. What the man should do after his graduation. B. The advice of the man's parents. C. Whether the man's parents will help him. 2. What do we know abou...