单选题 0.625分

Which of the following is usually NOT required in preparing a hold for reception of a bulk grain car...

Which of the following is usually NOT required in preparing a hold for reception of a bulk grain cargo?
  • A.To remove residue of previous cargo
  • B.To remove loose rust and scale
  • C.To steam clean areas obstructed by structural members
  • D.To spray or fumigate any insect colonies

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  • A.before
  • B.with
  • C.from
  • D.on