【判断题】视觉信号是以颜色、形状、位置、显示数目和灯光状态等表达的信号
【判断题】当用电焊焊接汽车车身时,不必事先将气囊组件的导线连接器断开。( )(I)
【单选题】What type of report would be issued to update for rapidly changing weather conditions?
【简答题】What
type of weather conditions are described in the statement?A. A hot summer day B. Winter weather C. Windy and gusty conditions D. Fog and poor visibility
【判断题】视觉信号,是以颜色、形状、位置、灯光数目和状态等表达的信号。如用信号机、信号旗、信号牌等。
【单选题】()是以信号的颜色、形状及用数字、灯光数目和状态等来表达的信号
【多选题】视觉信号是以( )和灯光状态等表达的信号。