【判断题】力偶只能使刚体转动,而不能使刚体移动。( )
【判断题】旅行社可以接受旅游者的委托,代办出境、入境、签证手续。
【单选题】—Is your math book on the desk, Tommy? —No, it isn't. It's _______. [ ]
【单选题】The desk is not dirty. You _____ clean it. [ ]
【判断题】财政法是调整国家财政收支关系的法律规范的总称,是执行财政政策和规范财政行为的有效保障。
【简答题】阅读理解 This is a small nice room. There is a bed, a desk and some chairs in it. The desk is near the window. On the desk there is a book, a glass and some cakes. The bed is near the desk. There are swea...
【单选题】— Is this a teacher's desk? — Yes, _____________. [ ]
【判断题】缝纫机脚踏板机构属于曲柄摇杆机构。( )
【判断题】移动侦测灵敏度指的是摄像机在移动的情况下录像准确度。