The nurse is changing the subclavian dressing over the catheter insertion site. Which one of the following actions would be appropriate for the nurse to incorporate into the dressing change

A. Place the client in high-Fowler’s position.
B. Check for tubing kinks and leakage.
C. Cleanse the area, starting 2 inches from the insertion site and moving inward.
D. Remove old ointment from the insertion site with soap and warm water.

某烧结车间烧结矿合格率为98%，已知出格品量75000吨，未验品量12000吨，试验品量1000吨，求年产量。