单项选择题

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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热门试题

单项选择题

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

单项选择题

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