JT/T 28.16-93 交通行业工人技术等级标准水上运输船舶餐务员
JT/T 28.16-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 28.16-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 29.7-93 Technical grade standards for workers in the communications industr...
行业标准2023.07.19
JT/T 29.8-93 Technical grade standards for workers in the communicntions industr...
行业标准2023.07.19
JT/T 29.9-93 Technical grade standards for workers in the communications industr...
行业标准2023.07.19
JT/T 29.10-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 29.11-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 29.12-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 29.13-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19
JT/T 29.14-93 Technical graide standards for workers in the communications indus...
行业标准2023.07.19
JT/T 29.15-93 Technical grade standards for workers in the communications indust...
行业标准2023.07.19