單項(xiàng)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

你可能感興趣的試題

單項(xiàng)選擇題

To reduce the number of strakes at the bow，two strakes are tapered and joined at their ends by a single plate. This plate is known as a（）.

A.cover plate
B.joiner
C.lap strake
D.stealer plate

單項(xiàng)選擇題

Those ship’s tanks that are particularly important for trimming the ship are the（）.

A.domestics
B.settlers
C.deeps
D.peaks