21 inches, 29 inches, 34 inches, 1609 in respect of basic maintenance costs 30 per cent in respect of reticulation, water inflow, soft failure and collection, 30 per cent in respect of replacement time, up to two and above (including spare parts of $10); 20 per cent in respect of replacement sensors 2 and above; 30 per cent in respect of replacement of electrical poles 2 and above; 20 per cent in respect of replacement of electrical vessels 2 and above; 20 per cent in respect of replacement of electrical transformers 2 and above; 30 per cent in respect of replacement of two and above; 30 per cent for replacement of two and above; 30 per cent for replacement of two and above; 30 per cent for replacement of three poles; 30 per cent for replacement of three poles; 30 per cent for repair of two and above; 70 per cent for repair of two and above; 30 per cent for replacement of 70 per cent and 40 per cent for conversion; 30 per cent for replacement of telephones; 30 per cent for replacement of 70 per cent and 40 per cent for replacement of telephones; 30 per cent for replacement of telephones; and 30 per cent for replacement of telephones and 30 per cent for replacement。
Replacement of integrated circuit ic chips (30% welding foot plus 30% replacement of high frequency head, not cumulative replacement switch, 20% repair, 20% replacement horn, statement of costs: total cost, basic maintenance, replacement hours, spare parts
