< Educational training Lecture 2: Properties of hydrogen relevant to safety Find the lecture translations Powered By EmbedPress Powered By EmbedPress Powered By EmbedPress Translations Czech translation : Level I / Level IVDutch translation : Level IFrench translation : Level I / Level IVGerman translation : Level I / Level IVItalian translation : Level I / Level IVNorwegian translation : Level ISpanish translation : Level I