【判断题】上机操作前必须穿戴好工作服,戴好安全帽和防护眼镜,为了保护手,可以戴手套。
【判断题】画点划线,如果所画出的点划线显示为直线应修改线型。
【单选题】画点划线时,如果所画出的点划线显示为直线,应修改
【单选题】画点划线时,如果所画出的点划线显示为直线,应修改
【单选题】When asked to explain ________ he does to make his students so fascinated with his lessons, the teacher paused and thought deeply.