César Chávez

Técnico electricista 14 – Curso visual y gráfico Protecciones eléctricas y tableros En esta clase analizaremos los principios de funcionamiento de los fusibles, las formas constructivas, y la operación de los interruptores termomagnéticos y diferenciales. Caracterizaremos los contactores, y explicaremos la construcción y clasificación de los tableros, veremos cómo se componen y los materiales utilizados para su construcción. Explicaremos los grados de protección IP relacionados con los tableros y mencionaremos los diversos accesorios que pueden utilizarse en tableros domiciliarios.

Surveys the life of Nathan Hale, a Revolutionary War hero whose service to George Washington as a spy cost him his life.

Martin Luther King, Jr. believed in fighting for Civil Rights for all people. In this Spanish-translated biography, readers will learn about his inspirational life as he fought for equality of African Americans through nonviolence. The rich photos, supportive text, helpful glossary, timeline, table of contents, and index give readers important information for understanding King's fight against Jim Crow Laws.

This upper-level text, perfect for art and culture courses, introduces students to the customs and history of Spain. This volume features a wide variety of readings, cultural activities, and 600 questions about the history, literature, art, and traditions of Spain, as well as a CD-ROM of interactive activities.