A.difference between the true course and the compass course B.momentum of a vessel after her engines have been stopped C.lateral movement of a vessel downwind of her intended course D.displacement of a vessel multiplied by her speed
A.用切削機械鑿除錯臺,修補縱坡變化控制在1%B.換板處理C.不用處理D.填料找平
A.分段診刮B.盡快行宮腔鏡檢查C.盆腔超聲D.病理診斷