单项选择题
A.should be supported at 24 inch intervals with plastic tie wraps B.should never be located in a tank C.must be installed in conduit D.All of the above
Increasing the number of slack liquid tanks has the eff...
单项选择题Increasing the number of slack liquid tanks has the effect of raising the（）.
A.uncorrected KG B.maximum allowed KG C.virtual height of the center of gravity D.metacentric height
In which case is the IOPP Certificate of an inspected v...
单项选择题In which case is the IOPP Certificate of an inspected vessel NOT invalidated? （）
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
In setting the valves on a steam-smothering system on a...
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（）.
A.open and individual tank valves open B.open and the individual tank valves closed C.closed and the individual tank valves closed D.closed and the individual tank valves open
