<?xml version="1.0" encoding="UTF-8"?><toc><section id="foreword.nat"><title>Nationales Vorwort</title><section id="sub-amendments"><title>Änderungen</title></section><section id="sub-previous.edition"><title>Frühere Ausgaben</title></section></section><section id="foreword.reg"><title>Europäisches Vorwort</title></section><section id="sub-1"><label>1</label><title>Anwendungsbereich</title></section><section id="sub-2"><label>2</label><title>Begriffe</title><section id="sub-2.1"><label>2.1</label><title>Ansaugschlauch</title></section></section><section id="sub-3"><label>3</label><title>Bezeichnung</title></section><section id="sub-4"><label>4</label><title>Anforderungen</title><section id="sub-4.1"><label>4.1</label><title>Bauteile, Maße und Masse</title></section><section id="sub-4.2"><label>4.2</label><title>Werkstoff</title></section><section id="sub-4.3"><label>4.3</label><title>Anschluss an den/die Zumischer/Zumischeinrichtung</title></section><section id="sub-4.4"><label>4.4</label><title>Dichtheit</title></section><section id="sub-4.5"><label>4.5</label><title>Querschnitt</title></section><section id="sub-4.6"><label>4.6</label><title>Knickung</title></section></section><section id="sub-annex.bibliography.reg"><title>Literaturhinweise</title></section><section id="sub-na"><label>Nationaler Anhang NA</label><title>Literaturhinweise (informativ)</title></section></toc>