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Get certified and stay ahead in the water treatment industry with this all-in-one guide for Class 1 through Class 4 water treatment plant operators. Whether you're just starting out or advancing to senior-level certification, this comprehensive study guide will prepare you to pass your exam with confidence—and thrive in the field long after test day.

On a stormy late May morning in 2008, TACA Airlines Flight 390 crashes at Honduras’s Toncontin International Airport, one of the most dangerous airports in the world. Five people die in the crash—among them Rossana D’Antonio’s brother, pilot Cesare D’Antonio. Suspecting Cesare will be made a scapegoat for the accident, as so often happens to pilots, Rossana decides to leverage her decades of experience as an engineer and set out in search of the truth.

Die Disziplin der Elektrotechnik macht unser modernes Leben erst möglich: Vom Wohnzimmerlicht über Ihren Induktionsherd bis zu Handy, Laptop oder Autopilot im Flugzeug – ohne die Details der Elektrotechnik wäre nichts davon denkbar. Es führt Sie verständlich, Schritt für Schritt und systematisch in die Grundlagen der Elektrotechnik ein und verschafft Ihnen ein solides Verständnis rund um elektrische Grundlagen, Schaltkreise und Stromeigenschaften.

Elon Musk is one of the wealthiest people in the world. Tesla made him a 300-times billionaire. Starlink turned him into a force in global conflicts. X became his personal megaphone, stoking political turmoil at the touch of a button. With SpaceX, he aims to conquer the stars. But a whistleblower, a 100GB-leak of confidential Tesla documents and two investigative journalists reveal the frightening truth behind the façade...