Astronaut propulsion unit Astronaut propulsion unit An astronaut propulsion unit (or astronaut maneuvering unit) is used to move an astronaut relative to the spaceship during a spacewalk. The first astronaut propulsion unit was the Hand-Held Maneuvering Unit (HHMU) used on Gemini 4. The Hand-Held Maneuvering Unit was the EVA "zip" gun used by Ed White on the Gemini 4 mission in 1965. The hand-held gun held several pounds of nitrogen, and allowed limited movement around the Gemini spacecraft. It was also used by astronaut Michael Collins on the Gemini 10 mission in 1966. The United States Air Force (USAF) Astronaut Maneuvering Unit (AMU)
Chinese as a foreign language also dispatched Chinese teachers abroad, and by the early 1960s had sent teachers afar as the Congo, Cambodia, Yemen and France. In 1962, with the approval of the State Council, the Higher Preparatory School for Foreign Students was set up, later renamed the Beijing Language and Culture University. The programs were disrupted for several years during the Cultural Revolution. According to the Chinese Ministry of Education, there are 330 institutions teaching Mandarin Chinese as a foreign language, receiving about 40,000 foreign students. In addition, there are almost 5,000 Chinese language teachers. Since 1992 the State Education Commission has managed a