用“SBA”造句大全，SBA造句
PreparationofMicro-MesoporousSilicaSBA-15StudiesonSBA-15Host-RhodamineBGuestNanocompositeMaterialandPhenylatingSBA-15Material;Studieson(SBA-15)-SulfideHost-GuestNanocompositeMaterialStudyonSBA-16Suppo...
如圖所示，四面體SABC中，，∠SBA＝45°，∠SBC＝60°，M爲AB的中點．則BC與平面SAB的夾角爲(...
問題詳情：如圖所示，四面體SABC中，，∠SBA＝45°，∠SBC＝60°，M爲AB的中點．則BC與平面SAB的夾角爲()A．30° B．60°C．90° D．75°【回答】B知識點：...