航海英语国际公约单项选择题每日一练(2018.10.15)

单项选择题
A vessel is inclined at an angle of loll. In the absence of external forces，the righting arm (GZ) is（）.
A.positive
B.negative
C.zero
D.vertical
单项选择题
Annex V to MARPOL 73/78 contains requirements pertaining to the discharge into the marine environment of（）.
A.oil
B.garbage
C.noxious liquid substances
D.None of the above
单项选择题
A vessel to which Annex V to MARPOL 73/78 applies is located in a MARPOL designated special area，14 nautical miles from nearest land. What type of garbage is permitted to be discharged? （）
A.Paper products
B.Glass ground to less than 1
C.Metal ground to less than 1
D.Food waste
单项选择题
What is the BEST conductor of electricity（）.
A.Carbon dioxide
B.Distilled water
C.Fresh water
D.Salt water
单项选择题
The Tonnage Certificate gives（）of a vessel which is classified into gross tonnage and net tonnage.
A.the descriptions
B.the measurements
C.the specifications
D.the prescriptions