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chemical agents and basic industrial chemicals;geochemistry;geology; chemical products generally; mechanical properties 1 chemical apparatus and plants; chemical agents and basic industrial chemicals; chemical products generally;organic compounds 1 mechanical properties;atmospheric properties; chemistry; chemical agents and basic industrial chemicals; chemical products generally; engineering profession; engineering graphics; engineering standards; materials science 1
metallurgy and metallography;heat exchange equipment and components;chemical reactions;organic compounds 1 organic compounds;control systems; computer software, data handling and applications;inorganic compounds; telephone systems and related technologies; line communications; telecommunication; radar, radio and television; computer systems and equipment 1 有机化学 1

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