1、单选题:With carbon equivalent ( ), the steel has a low tendency to harden and cold cracking?选项:A:less than 0.40%B:less than 0.60%C:less than 0.50%D:less than 0.80%答案: 【less than 0.40%】
2、...
1、单选题:Who studies consumer experience through "Human Brain Module Analysis" and psychosocial theory, and proposes five major experience systems?( )选项:A:Abraham MaslowB:Bernt SchmidtC:Donald ...