Cuáles fueron las ventajas de la telegrafia óptica respecto a los sistemos empleados anteriormente
(envio de mensajeros, uso de señales de humo,
banderas de colores o sonidos de tambores?
பா​

Where can page numbers appear? check all that apply. in the header inside tables in the footer at the bottom of columns at the top of columns

What are two ways to access the options for scaling and page orientation? click the home tab, then click alignment, or click the file tab. click the file tab, then click print, or click the page layout tab. click the page layout tab, or click the review tab. click the review tab, or click the home tab?

Two students are discussing electricity that has a frequency of 60 hz. student a says that this type of electricity is referred to as ac. student b says that in this type of electricity, the electrons flow in only one direction. which of the following statements is correct? a. only student a is correct b. only student b is correct c. both of the two students are correct d. neither of the two students is correct