题目内容
（请给出正确答案）
______ is not a structural adhesive.
A) casein
B) urea-formaldehyde
C) phenol-resorcinol-formaldehyde
D) poly (vinyl acetate)
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Can authority be criticized？ In 56 of the word, authority is not 57 either out of respect or out of 58 . In such countries children are not expected to 59 their teachers in school and 60 young scholars or 61 industrial mean are ham- pered (受阻) in technical research because they don't feel free to 62 with their su-periors. Clever researchers may be considered too 63 to have "any fight" to pres-ent 64that are different from knowledge and wisdom of men of old ages. 65 , the American is 66from childhood to question, analyze and search.
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A.much
B.any
C.much
D.many
A、variety
B、change
C、diversification
D、diversity
A、Your visa.
B、Your passport.
C、Your photo.
D、Your return ticket
A) Ability to adhere to the fibers
B) Higher stiffness compared with reinforcement
C) No significant chemical reaction between the two phases
D) Thermochemical compatibility between the fibers and matrix material
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