【判断题】PLC的存储器分为系统程序存储器和用户程序存储器。
【单选题】My friend John called and ____me to his party just now.
【单选题】John has just passed his driving test, so now he's on the ______ for a cheap car.
【多选题】臀部离开双足,以两膝着地的做法称( )。
【单选题】听力原文:W: Hello. May I speak to John? M: Sorry, he has just gone to America for a meeting. Where is John now?
【单选题】Photoshop是一款专门用于( )处理的软件。
【单选题】Photoshop是一款专门用于处理( )的应用软件?