正确答案: C
            Ⅱ+Ⅲ+Ⅳ+Ⅴ 
            题目:艉轴铜套损坏的主要形式有()。Ⅰ.腐蚀;Ⅱ.裂纹;Ⅲ.过度磨损;Ⅳ.套合松动;Ⅴ.接缝不良。
           
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            学习资料的答案和解析:
                                                    
                                 
                
                 [单选题]串联连接系统的可靠度()组成该系统各部件的可靠度。
                                                
                  
                                                                                                                                                                 小于 
                                                                                        
                
                
                            
                
                 [单选题]排气阀阀面磨损严重时,采用()修复。
                                                
                  
                                                                                                                                                                 堆焊 
                                                                                        
                
                
                            
                
                 [单选题]Before pumping up the crankcase oil,() should be worked by hand to minimize corrosive action on the liners.
                                                
                  
                                                                                                                                                                 the cylinder lubricators 
                                                                                        
                
                
                            
                
                 [单选题]The energy for pushing this piston up can be supplied from (), so that the piston can keep moving up and down.
                                                
                  
                                                                                                                                                                 the other pistons