______________ are a type of cable that is used by cable TV. A: Fiber cables B: Twisted pair cables C: Coaxial cables

The transmission media used by 10BASE-T Ethernet is ( ) A: Twisted pair B: Fiber C: Coaxial cable D: Radio waves

The transmission media used by 10BASE-F Ethernet is ( ) A: Fiber B: Twisted pair C: Coaxial cable D: Radio waves

Among the following transmission media, the lowest bit error rate is ( ) . A: Optical fiber B: Coaxial cable C: Twisted pair D: Microwave

In a data communication system, the transport media with the widest frequency band and best reliability is the( ). A: radio channel B: coaxial cable C: twisted--pair cable D: fiber optic cable

Among the following four transmission media, which has the widest bandwidth, the smallest signal transmission attenuation and the strongest anti-interference capability? A: Twisted pair B: Coaxial cable C: Optical fiber D: Microwave

Coaxial Cable：____________

The phenomenon of shrinkage and swelling of wood occurs in A: below fiber saturation point. B: above fiber saturation point. C: above or below the fiber saturation point. D: no correlation with fiber saturation point.

Which one has the function of defense and protection A: Matrix B: Collagen fibril C: Collagen fiber D: Elastic fiber E: Reticular fiber

Fruits are a good source of which nutrients? A: Vitamins, carbohydrates, and minerals B: Fats, carbohydrates and fiber C: Minerals, vitamins, and fiber D: Protein, fiber, and vitamins