【判断题】汽车 安全气囊系统 工作 过程如下:碰撞 →碰撞传感器→电子控制器→(电脉冲)→气体发生器→充气、气囊展开→保护乘员。
【单选题】This computer is popular for its good design and_____ of use.
【判断题】内标法定量,加入的内标物必须是混合物中已有的物质( )。
【简答题】This computer is popular for its good design and _____(easy) of use.
【简答题】This computer is popular for its good design and ______ of use.(ease, easy)
【单选题】She is making ( )a cup of coffee.