单项选择题
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
D.all of above
单项选择题 Inspection of a vessel’s propeller during dry-dock should include （）
单项选择题 When the tail-shaft is drawn from a vessel in dry-dock, which of the following inspections is required to be carried out?（）
单项选择题 Which of the listed types of files is the best for producing a fine finish on metal?（）