多选题 2.00分

When the builder starts to build a house, his estimate will have to be corrected and re-vised becaus...

When the builder starts to build a house, his estimate will have to be corrected and re-vised because__________.
  • A.it is wrongly worked out by a workman
  • B.the future owner of the house thinks the estimate is so high that he cannot afford the building
  • C.the prices of building materials and the expenses of labor may be different from the originalprices and expenses
  • D.estimates are usually mistaken in the beginning

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