变电站电气主接线是指变电站的变压器、输电线路怎样与电力系统相连接，从而完成输配电任务。变电站的主接线是电力系统接线组成中一个重要组成部分v 一、写出下列动词的第三人称单数形式v1.work_read_v2.clean_write_v3.teach_wash_v4.guess_watch_v5.go_do_v6.study_fly_v7.cry_play_v8.have_sit_works readscleans writes teaches washes guesses watches goes does studies flies cries plays has sits 变电站电气主接线是指变电站的变压器、输电线路怎样与电力系统相连接，从而完成输配电任务。变电站的主接线是电力系统接线组成中一个重要组成部分二、写出下列动词的现在分词形式work_sing_play_study_dance_have_write_take_run_sit_shop_swim_lie_fly_speak_working singingplaying studying dancing having writ
