装配时用求确定模具零件在模具中位置所使用的基准为()
A、定位基准
B、测量基准
C、装配基准
D、工序基准
参考答案:C
A: Is that your watch _____ the lost and found case? Please call me _____ 685-6034.
B: Oh, thank you.[ ]
A. in, in
B. at, at
C. in, at
D. at, in
简述个体身心发展的外铄论。