【Joint Study*】【Electrical Version 20160316】
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Participation reward: 2 Wealth. Reward for correct answer: 9 wealth. In an 18-story building, the main electrical supply lines for indoor lighting serve each household; for lighting purposes, three ordinary cables of type VV-4*120+1*70 are used (with each cable carrying the lighting power for the households on 6 floors). A radial power distribution system is employed, with branch cables of type VV4*25+1*16 being used. The connection between the main cables and the branch cables is made using cable insulation piercing clamps. The cost of these cable insulation piercing clamps for this building is ( ) yuan (round to the nearest integer). A: 61 B: 20 C: 610 D: 200
In an 18-story building, the main electrical supply lines for indoor lighting serve each household; for lighting purposes, three ordinary cables of type VV-4*120+1*70 are used (with each cable carrying the lighting power for the households on 6 floors). A radial power supply system is employed, with branch cables of type VV4*25+1*16 being used. Cable insulation piercing clamps are used to connect the main cables to the branch cables. The cost of the cable insulation piercing clamps used in this building is (A) yuan (rounded to the nearest integer). A: 61 B: 20 C: 610 D: 200
In an 18-story building, the indoor electrical supply main lines for lighting in each unit use three ordinary cables of type VV-4*120+1*70; each cable is used to supply lighting power to the units on 6 floors. A radial power supply system is employed, with branch cables of type VV4*25+1*16. Cable insulation piercing clamps are used to connect the main cables and their branches. The cost of the cable insulation piercing clamps used in this building is (A) yuan (rounded to the nearest integer). A: 61 B: 20 C: 610 D: 200
A: 61~~~~~~~~~~~~