用截面法求一水平杆某截面的内力时，是对()建立平衡方程求解的。
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暂无解析
Searle'sclassificationofillocutionaryactsisbasedontheclassificationofperformativeverbs.
Weweretoldthatthestonefigure_______backtothe16thcenturywasofgreatvalue.
TheIndo-EuropeanlanguagefamilyismadeupofthelanguagesofthefollowingEXCEPT______.
Hebecameasuccessfulactor________hisfatherneverwas.
Let’snottakeJohnwithusonourfamilyoutingthistime,_______________?