单项选择题
A.Danger of heavy ship sweat exists； constant and vigorous ventilation is required
B.There is danger of heavy cargo sweat if outside air is introduced by ventilation
C.There is little danger of ship's sweat，slight possibility of cargo sweat； moderate ventilation is needed
D.The possibility of any sweat problem，either cargo or ship，is remote
单项选择题 It would be possible that part of the cargo got（）as great change in the weather during the voyage caused heavy（）in the hold.
单项选择题 In order to determine the trimming arm for your vessel at any particular draft，which of the following would you compare?（）.
单项选择题 If the metacentric height is small，a floating vessel will（）.