Answer:
what
Explanation:
im so sorry i cant understand
answer explanation: <u>A reference designator indicates the location to insert a component on an item, for example, where to mount an electronic component on a printed circuit board. ... Link a single reference designator to a single (E)BOM line. One or more identical items on the (E)BOM line have the same reference designator.</u>
B. using words to mimic sounds.
Age. How old they are when they start learning is very important.
