there are 1 and 5 main fiber optic system
You haven't stated any categories.
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Noninvasive procedures and invasive procedures
There are four main categories of contamination. The four main types are water, dilute acids, dilute bases, and organic solvents.
Vertebrates and invertebrates.
carbohdartes and fiber
2 main categories 1. Internal 2.external
Metals, Non-metals, and metaloids
It is not possible to answer as there are many more than 2 categories.
There are 22 Main Categories on WikiAnswers.
IT is separated into two main categories (1) those which process information, such as computer systems, and (2) those which disseminate information, such as telecommunication systems.
There are actually several binary, mutually exclusive categories fiber optic cables can fall under. The most common is propagation mode, of which the two types are single mode and multimode.
The main categories of food are:CarbohydratesFatsProteinsVitaminsMinerals
there are 2 categories of twisted pair calbes 1. un-sheilded twisted pair (UTP) 2. Sheilded twisted pair (STP)
there are 1 and 5 main fiber optic system
With fiber optic lamps, there is no electricity at the point of illumination. The main application of fiber optic lamps is for pools, spas, and saunas.