维修人员在从事航空器维修中的重复性工作时存在一些共性的问题,下面对于该类问题描述不正确的是()
A、过分自信、自满
B、缺乏警觉性
C、节省步骤
D、培训不足
参考答案:D
Americans who consider themselves ______ in the traditional sense do not usually hesitate to heap criticism in domestic matters over what they believe is oppressive or wasteful.
A.pedestrian
B.penchant
C.patriarch
D.patriotic
S指令是()
A、主轴旋转指令;
B、准备功能指令;
C、插补进给速度指令;