【正确答案】The properties of fiber-reinforced composites depend on the fiber, the matrix and processing methods. The fiber influence the properties of fiber-reinforced composites through its loading, aspect ratio, orientation (including straightness, degree of knitting, interlacing), and defects in atomic structure or macrodefects on the surfaces of the fibers. The matrix's ability to adhere to the fibers, as well as its inherent toughness, also makes a contribution. The processing method that affects performance of composite is the degree to which the fibers are saturated with wet matrix, leaving few or no voids.