A.Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleaned
B.The hoses to portable cleaning machines should be disconnected before the machines are removed from the tank
C.The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residue
D.Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
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A.Isoprene may be carried in a cargo tank adjacent to either of the other two cargoes
B.Methyl methacrylate may not be carried in a tank adjacent to a pump room
C.Methyl methacrylate must usually be heated to maintain its stability
D.Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine
A.Each of the cargoes must be segregated from the other by at least two barriers
B.The minimum protective clothing required for taking samples of phosphoric acid is goggles or a face shield
C.Aluminum，copper，and zinc are prohibited in all valve parts in contact with these cargoes
D.The required warning sign must have the legend "cancer hazard" added to it
A.Keep well clear of the vessel because she is on fire and has dangerous cargo on board or she is leaking dangerous cargo
B.Attempt to call the vessel on VHF radiotelephone because she is requesting to communicate
C.Approach the vessel with caution because she is dragging her anchor
D.Proceed on present course and speed since the vessel is requesting a tug
A.increases as the angle to the horizontal increases
B.increases as the angle to the horizontal decreases
C.is greatest at an angle of 45° and decreases as the boom is raised or lowered
D.is least at an angle of 45° and increases as the boom is raised or lowered
A.increases as the boom's angle to the horizontal increases
B.is at a maximum when the boom is at a 45° angle to the horizontal
C.increases as the boom's angle to the horizontal decreases
D.decreases as the boom's angle to the horizontal decreases
最新試題
In time charter-party，（）is to indemnify the owners against all consequences or liabilities arising from the master signing bills of lading or otherwise complying with such orders.
Which vessel is NOT classified as “restricted in her ability to maneuver”? （）
You are Master of a vessel that is sold in a foreign country after discharge of cargo. What is your responsibility to the crew in regards to return to the United States? （）
While your vessel is docked port side to a wharf，a sudden gale force wind causes the vessel’s stern lines to part. The stern begins to fall away from the dock，and no tugs are immediately available. Which measure(s) should you take FIRST?（）
You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）
Which statement is TRUE concerning the tandem working arrangement of pedestal cranes when completing a quad lift? （）
You are on a cargo vessel carrying toluol in bulk in portable tanks. Which is a requirement for pumping the toluol? （）
You are discharging cargo and the inert gas system is in operation to inert the tanks. The pressure in a tank being discharged starts to drop below the allowable limit. What action should you take? （）
If any cargo is damaged，the insurance company usually pays to the cargo owner a sum of money equal to the value of（）.
In charter-party，a clause states: the vessel to be employed between good and safe ports or places where she can（）.