单项选择题
The strake on each side of the keel is called a（）.
A.Sheer strake B.Gatewood strake C.Insulation strake D.Garboard strake
单项选择题 The section of each end of a barge which is heavily reinforced to take the pressure of pushing is called the（）.
单项选择题 The riding pawl is（）.
单项选择题 The primary barrier of a bulk carrier is formed by（）.
