單項選擇題What is NOT used as a stern tube bearing,on a large vessel? ()

A.Wooden (lignum vitae) strips
B.Hard rubber
C.Resin bonded composition
D.Bronze bushings


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1.單項選擇題What best describes the structure from which Stratford Point Light is shown?()

A.Brown conical tower with white horizontal band in center of light on black pier
B.Red conical tower on brown cylindrical pier
C.White octagonal house on brown cylindrical pier
D.White conical tower,with brown band midway of height

2.單項選擇題Upon underwater()by divers,there are no apparent()on the bottom plates of the said vessel.

A.detection,defects
B.defection,defects
C.defects,defection
D.defects,detection

5.單項選擇題The words PIPE,BUTT,TUN AND PUNCHEON all refer to().

A.the sizes of casks
B.various lengths of timber
C.structural shapes used in construction
D.viscosities of liquid cargoes