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C20 or C-20 may refer to: * , the smallest possible fullerene * C20 (engineering), a mix of concrete that has a compressive strength of 20 newtons per square millimeter * HMS ''C20'', a 1910 British C class submarine * Sauber C20, a 2001 racing car * C-20, a series designation for military aircraft: * * C-20, the proposed in-service designation of the Fokker F.32 * * C-20A/B/C/D/E, variants of the Gulfstream III * * C-20F/G/H/J, variants of the Gulfstream IV * Bombardier C20, a type of rolling stock used in the Stockholm metro * Bill C-20, the Canadian Clarity Act * OMX Copenhagen 20, Denmark's primary stock market index * Malignant neoplasm of rectum, a type of colorectal cancer (ICD-10 code: C20) * King's Pawn Game, a chess opening (Encyclopaedia of Chess Openings code: C20) * The Twentieth Century Society, a British charity which campaigns for the preservation of architectural heritage from 1914 onwards * Caldwell 20 or North America Nebula, an emission nebula in the constellation Cygnus * C20 Cities, now expanded to the C40 Cities Climate Leadership Group * IEC 60320 C20, a polarised, three pole socket electrical connector * , a cruiser of the Royal Navy ==See also== * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「C20」の詳細全文を読む スポンサード リンク
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