单项选择题
0ur starboard derrick boom of hatch No.4 is baddly cracked（）that it has become entirely useless.
A.at its goose neck to such a extent B.at it's goose neck to such an extent C.at it's goose neck for such a extent D.at its goose neck to such an extent
单项选择题 0vercarring is best prevented by（）.
单项选择题 Paints and solvents on a vessel should be（）.
单项选择题 Panting frames are located in the（）.
