经济类 jing ji lei qi kan rong yi zhong
能源 类易中 neng yuan lei yi zhong s c i qi kan
汽车 qi che lei qi kan rong yi zhong
兵器 rong yi zhong bing qi lei qi kan
机械类 s c i ji xie lei yi zhong qi kan
通信 tong xin lei rong yi zhong qi kan
土木 tu mu lei qi kan rong yi zhong
采矿 yi zhong de cai kuang lei qi kan
材料 yi zhong de cai liao lei qi kan
教育类 yi zhong de jiao yu lei qi kan
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