【单选题】20 / 5t 桥式起重机连接线必须采用铜芯多股软线,采用多股单芯线时,截面积不小于 ( ) 。
【判断题】Marketing is coming up with promotional means to attract as many buyers as possible.
【单选题】20 / 5t 桥式起重机连接线必须采用 ( ) 。
【单选题】—Yang yan, are you coming with us? —I’d love to, but something unexpected ______.
【单选题】公文写作运用最普遍的起草组织形式是( )