The first point is,of course,the best,but this kind of thing is something that can’t be asked for.The second one is of course the second one.In-person guidance is definitely faster than self-study.The disadvantage is that it takes several months and a lot of money.The third point is that there is no way to do it.For example,the on-duty staff can’t find time to learn,and there is time but no place to learn.Therefore,if you learn by yourself,it is best to buy a PLC learning machine.Come to can,much better than reading a book.
第一点当然是最好的,不过这种事是可遇而不可求的。次一点的当然是第二种了,有人当面指导肯定比自学快,缺点就是需要几个月时间和不小的花费了。第三点是没办法才取的法子,比如在值的上班人员没办法抽时间去学,还有就是有时间但是没地方去学,所以呢,要是自己自学的话最好买一套PLC学习机来能,比看书强很多。
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