G02可以理解为顺铣,G03可以理解为逆铣。( )
参考答案:错
After I had finished eating, he advise me ______ immediately.
[ ]
A. set off
B. set aside
C. set down
D. set about
销售包装按其形式、作用和使用的材料,可分为()
A、陈列展销类包装
B、识别商品类包装
C、使用类包装
D、中性包装
E、单件包装