单项选择题 Which of the descriptions on “thermoset prepregs” is not true? A、The resin matrix for thermoset prepregs is partially cured. B、The resin matrix for thermoset prepregs is fully cross-linked C、The thermoset prepregs are dramatically different from thermoplastic prepregs. D、More commonly used in prepreg composite manufacturing is thermoset prepregs.
单项选择题 Fundamentalism was strong in Tennessee, and the state legislature had recently passed a law prohibiting the teaching of… A、prevent B、allow C、exhibit D、disarm
多项选择题 下列选项中,不属于拉伸深度定义形式的一项是( )。 A. 方向和距离 B. 裁剪至面 C. 裁剪至体 D. 裁剪至点