JT/T 32.9-93 Technlcal grade standards for workers in the communications industry-Alds to navrgation and hydrographic survey-Radio beacon operators. 1

JT/T 32.3-93 Technical grade standards for workers in the communications Industry-Aids to navigation and hydrographic survey- River visual aids mainta

JT/T 31.5-93 Technical grade standards for workers in the communications industry-Salvage-Heads of Salvage motormen. 1主题内容 与适用范围 JT/T 31.5规定了救捞机工长的等级应

JT/T 31.6-93 Technical grade standards for workers in the communications industry-Salvage-Workers for manufacturing the diving suits. 1主题内容 与适用范围 JT/T

JT/T 32.1-93 Technical grade standards for workers in the communicatfons industry-Aids to riavigation and hydrograpbic survey-Lighthouse maintainers.

JT/T 32.2-93 Technical grade standards for workers in the communications industry-Aids to navigation and bydrographic survey-Coastal visual aids maint

JT/T 30.15-93 Technical grade standards for workers in the commuanications industry-Waterway dredging-Sailors. 1主题内容 与适用范围 JT/T 30.15规定了工程船舶水手的等级.应知、应

JT/T 30.16-93 Technical grade standards for workers in the communications industry-Waterway dredging-Statistics men. 1主题内容与适用范围 JT/T 30.16规定了疏浚统计工的等级、

JT/T 31.1-93 Technical grade standards for workers in the communieations industry-Salvage-Divers at sea. 1主题内容 与适用范围 JT/T 31.1规定了海上教捞潜水员的等级、应知、应会和工作实例

JT/T 31.2-93 Technical grade standards for workers in the communientlons industry-Salvage-Inland waters divers. 1主题内容 与适用范圈 JT/T 31.2规定了内河潜水员的等级、应知、应会