单项选择题

Inspection of a vessel’s propeller during dry-dock should include （）

A.noting the condition of the fairwater
B.inspection of the keyway
C.logging inspection results in the official deck log
D.all of above

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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?（）

A.The propeller hub taper and shaft keyway should be inspected for cracks or corrosion
B.The stern bearing alignment with the stern frame should be checked
C.The interior of the stern tube should be inspected for leaks
D.The shaft liner should be removed and inspected

单项选择题

Which of the listed types of files is the best for producing a fine finish on metal?（）

A.Mill
B.Float
C.Warding
D.Second cut

单项选择题

The tool used in precision work to smooth or enlarge a slightly undersized hole, is called（）

A.round out
B.round file
C.reamer
D.hole driller