操纵________是改变旋翼拉力方向的主要手段。
C
暂无解析
WhichofthefollowingisNOToneofthecharacteristicsofidioms?
Theprofessorworkedfor7hoursata________.
Idon’tmind_______thedecisionaslongasitisnottoolate.
Intheoriginaltest，alltheanimalsinatestgrouparegivenasubstance_______halfofthemdie
英语翻译：御花园
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