【正文】 ............................................................................46 ...................................................................................................................................47 ...................................................................................................................48...........................................................................................................................49 ...............................................................................................................................49 ...............................................................................................................................50 .................................................................................................................................52 ...................................................................................................53 ..................................................................................................................................56 .......................................................................................................................56 ...........................................................................................................................56 .......................................................................................................................57 ...........................................................................................................................58 ...........................................................................................................................59 ...................................................................................................................59 ...........................................................................................................................61……………………………………………………………………………...63 ...........................................................................................................................66 .............................................................................................................67 .........................................................................................................................72 .........................................................................................................74 、電工、司機(jī)通用.....................................................................................................78 .....................................................................................................................................85 .....................................................................................................................................87 ..................................................................................................................................93 （切割）工...........................................................................................................93 ...................................................................................................................................96 ...............................................................................................................................97 .......................................................................................................................98 .........................................................................................................100 .............................................................................................................................101 ............................................................................................................................103 第二節(jié)機(jī)電專業(yè)必知必會...........................................................................................................105 ............................................................................................................................105 ........................................................................................................................................122 ................................................................................................................................130 ........................................................................................................................136 ................................................................................................................142 ................................................................................................................................145 ................................................................................................................................148 ....................................................................................................................................153 ................................................................................................................................155 ..............................................................................................................................158 ...................................................................................................................158 .......................................................................................................................159 .......................................................................................................................159 ...................................................................................................................160...............................................................................................................................1