题目正常成人胸廓左右径与前后径之比为:A. 1:1B. 1:1.5C. 2.5:3D. 2:3E. 1.5:1正常成人胸廓左右径与前后径之比为:A. 1:1B. 1:1.5C. 2.5:3D. 2:3E. 1.5:1题目解答答案B. 1:1.5