【单选题】—Mum, what are you getting me for my birthday? — __________-you'll have to wait and see. [ ]
【判断题】双作用叶片泵因两个吸油、压油窗口成对称布置,因此作用在转子和定子上的径向力平衡,寿命长。
【单选题】宋代的谁的诗文中记载了兴化演戏的热闹场景“空巷无人尽出嬉”?
【单选题】I'll wait for you at the gate of the Music Hall. See to ________ that you'll get there on time. [ ]
【判断题】双作用叶片泵的配油盘上有两个吸油窗口和两个压油窗口,窗口之间为封油区。
【判断题】双作用叶片泵两个吸油窗口和两个压油窗口分别对称布置,因此作用在转子和定子上的液压径向力平衡,轴承承受径向力小、寿命长。()
【简答题】由于双作用式叶片泵的两个吸油窗口和两个压油窗口呈( )分布,径向受力是( )的,因此这种叶片泵又称为卸荷式叶片泵
【单选题】--- Sorry, you’ll have to wait for a day or two and then your dress ______ . --- OK, I’ll come to fetch it then.