JT/T 31.1-93 Technical grade standards for workers in the communieations industry-Salvage-Divers at ...
JT/T 30.16-93 交通行业工人技术等级标准航道疏浚疏浚统计工
JT/T 30.16-93 Technical grade standards for workers in the communications industry-Waterway dredging...
JT/T 30.15-93 交通行业工人技术等级标准航道疏浚工程船舶水手
JT/T 30.15-93 Technical grade standards for workers in the commuanications industry-Waterway dredgin...
JT/T 30.14-93 交通行业工人技术等级标准航道疏浚沉排、 抛石工
JT/T 30.14-93 Technical grade standards for workers in the communications industry-Waterway dredging...
JT/T 30.13-93 交通行业工人技术等级标准航道疏浚扎笼、扎排工
JT/T 30.13-93 Technieal grnde standards for workers in the communieations industry-Waterway dredging...
JT/T 30.12-93 交通行业工人技术等级标准航道疏浚航道信号工
JT/T 30.12-93 Technical grade standards for workers in the communications industry-Waterway dredging...
JT/T 30.11-93 交通行业工人技术等级标准航道疏浚绞滩工
JT/T 30.11-93 Techntcal grade standards for workers in the communleatlons industry-Waterway dredging...
JT/T 30.10-93 交通行业工人技术等级标准航道疏浚船闸工
JT/T 30.10-93 Technical grade standards for workers in the communications industry-Waterway dredging...
JT/T 30.9-93 交通行业工人技术等级标准航道疏浚船闸电气运行工
JT/T 30.9-93 Technical grade standards for workers in the communications industry-Waterway dredging-...
JT/T 30.8-93 交通行业工人技术等级标准航道疏浚船闸机械运行工
JT/T 30.8-93 Technical grade standards for workers in the communcations industry-Waterway dredging-T...
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