【单选题】7 / 86直角角焊缝的计算厚度heh_ehe与焊脚尺寸hfh_fhf的关系是?Ahe=hfh_e=h_fhe=hfBhe=0.7hfh_e=0.7h_fhe=0.7hf正确Che=1.4hfh_e=1.4h_fhe=1.4hfDhe=0.5hfh_e=0.5h_fhe=0.5hf参考答案B参考解析he=0.7hf。