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)
Test of Chinese as a Foreign Language for admission or as the evaluation of applicant’s Chinese proficiency. In addition, many international businesses in Taiwan, such as LG, adopt TOCFL as reference for their employee dispatch programs. Several overseas companies also refer to candidates’ TOCFL certificates when recruiting. TOCFL is a foreign language proficiency test for non-native speakers of Mandarin Chinese. Those who wish to know their level of Chinese proficiency, and those who want to study, work, or do business in Chinese-speaking countries or contexts are welcome to register for the test. The following table sets out the suggested learning hours of Mandarin Chinese, and suggested vocabulary