单项选择题
A.The required oily-water separator malfunctions
B.The ship is transferred to Liberian registry
C.An annual survey is conducted fifteen months after the date of certificate issuance
D.A 15 ppm oily-water separator is replaced by a 100 ppm oily-water separator
单项选择题 In setting the valves on a steam-smothering system on a tanker，the master control valve to cargo tanks should be（）.
单项选择题 In order to reduce the accumulation of static electricity while loading petroleum products，you should（）.
单项选择题 If you are bunkering and you close off one tank in the line of tanks being filled，the rate of flow to other open tanks on the same line will（）.