单项选择题

The procedure of strengthening damaged structures on a ship by using wood or steel is called（）.

A.bracing
B.battening
C.blocking
D.shoring

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单项选择题
The pillar shape that gives the greatest strength for the least weight is the（）.

A.octagonal pillar
B.H Beam pillar
C.I Beam pillar
D.circular type pillar
单项选择题
The normal tendency for a loaded tanker is to（）.

A.hog
B.sag
C.have a permanent list
D.be very tender
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