you can learn the theoretic at school,while outside school you can get the practical .People outside school won't regard you as a student,the best way is to coincide the things learned in school with ...最好能分成四個(gè)點(diǎn)。兩個(gè)inside。兩個(gè)outside的。inside school:learn the theoretic & simulate the operating steps so that you can be familiar with the knowledge and with moremanual operation chancesoutside school:learn from the real scene of operation & coincide the things learned in school so that you can easily and fast follow the work