【单选题】A vessel has been equipped with an oil lubricated stern bearing and is undergoing a routine dry-dockWhich of the following inspection should be made when the tail-shaft has been drawn?
A.
The overall condition of the bearing surface should be examined
B.
The shaft liner should be inspected for cracks and tested to insure a tight fit
C.
The stern tube should be tested for cracks with dye penetrant
【简答题】Our risk of cancer rises dramatically as we age. So it makes sense that the elderly should be routinely screened for new tumors — or doesn’t it? While such vigilant(警觉的)tracking of cancer is a good th...