线路的杆塔上必须有线路名称、杆塔编号、()以及必要的安全、保护等标志
B
暂无解析
WhichofthefollowingtechniquesisNOTusedintheGrammar-TranslationMethod?________
翻译：WeadvisedyouinourletterofDec.1,thatwewouldliketoplaceatrialorderwithyoufor50piecesFlyingPigeonBicycles.
______isrecognizedasthenationalflag-carrier.
Iappreciate________(give)theopportunitytostudyabroadthreeyearsago.
名词解释：copyright