机械加工工艺规程实际上就是指规定零件机械加工工艺过程和操作方法等的（）。
参考答案：工艺文件
As the wedding ceremony is drawing near, Miss Lin has showed _______ of such worry and fear as sleeplessness and poor appetite.
A．symbols
B．signs
C．marks
D．signals
南平市提高环境日常监测监管和（）能力、环境安全突发事件处置和应对能力。
A.处置
B.应对
C.预警
