进行作业准备验证的时机：（）
A.生产启动时
B.顾客有要求时
C.按照控制计划规定
D.不需要验证
参考答案：A
Look! She is coming here and there _____. [ ]
A. goes the bus
B. going the bus
C. the bus goes
D. the bus going
钢铁丝绒
