| 安全生产基本知识 | |
| 1 | 
                                                    
                                                     47:30 733  | 
                                            
| 2 | 
                                                    
                                                     01:33:50 584  | 
                                            
| 3 | 
                                                    
                                                     01:09:35 661  | 
                                            
| 4 | 
                                                    
                                                     01:10:00 603  | 
                                            
| 专业相关基础知识 | |
| 5 | 
                                                    
                                                     01:40:00 526  | 
                                            
| 6 | 
                                                    
                                                     02:50:00 528  | 
                                            
| 7 | 
                                                    
                                                     01:49:00 545  | 
                                            
| 8 | 
                                                    
                                                     01:15:00 517  | 
                                            
| 9 | 
                                                    
                                                     25:00 502  | 
                                            
| 10 | 
                                                    
                                                     51:00 546  | 
                                            
塔式起重机06