单项选择题Which action must be taken when an individual cargo tank is closed off from the inert gas system by the tank isolation valve?()

A.The tank must be gas freed
B.The tank must be ballasted
C.The tank must be vented to the atmosphere
D.The bypass valve must also be closed


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1.单项选择题When the dew point of the outside air is lower than or equal to the dew point of the air in the cargo hold,you should().

A.secure all ventilation
B.shut down the exhaust blowers
C.shut down the intake blowers
D.ventilate the cargo holds

2.单项选择题When referring to dry bulk cargoes,the term “flow state”().

A.designates the state of a commodity when the ship is heeled past the angle of repose
B.relates to the suitability of loading a cargo by flowing down inclined chutes
C.refers to the saturation of a dry bulk product with water to the point where it acts as a liquid
D.relates to the minimum granule size of a particular product where it will flow like a liquid at an angle of 30°

3.单项选择题When measuring the oxygen content of the cargo tanks prior to loading cargoes requiring vapor recovery,check it().

A.one meter from the tank bottom and one meter below the tank top
B.one half the ullage of the tank and one meter below the tank top
C.one half the ullage of the tank and one meter above the tank bottom
D.at three meter intervals from the tank top to the bottom

4.单项选择题When loading bulk liquid cargo,what is the first action you should take if a cargo valve jammed open?()

A.Call the owner,operator,or terminal supervisor
B.Unplug the deck scuppers
C.Order the dock man to shut down
D.Run out the vessel's or terminal's fire hose

5.单项选择题When considering a vessel’s stability,which spaces in a general cargo vessel are the best locations for the carriage of bulk grain? ()

A.Deep tanks
B.Lower holds
C.Lower holds at the ends of the vessel
D.'Tween-decks

6.单项选择题When commencing cargo operations on a container ship,one cell at a hatch is generally discharged completely (to the bottom of the ship) before removing any containers from the adjoining cells to().

A.remove an existing list that would slow down cargo operations
B.initiate loading in conjunction with unloading at the hatch
C.improve stability during cargo operations
D.allow longshoremen easy access to the hatch

7.单项选择题When clearing customs for a foreign voyage,which of the following is processed at the custom’s house and returned to the vessel? ()

A.Shipping Articles
B.Traveling Curio Manifest
C.Official Logbook
D.Cargo Gear Register

8.单项选择题When carrying a cargo of asphalt or molten sulfur,which are carried at temperatures of over 300°F,one of the biggest dangers is().

A.water in the tanks or pipelines
B.having the cargo too cool
C.explosion of vapors after discharge
D.inadequate ullage space

9.单项选择题When cargo aboard a jack-up in transit becomes adrift,the tow vessel should be asked to ().

A.turn into the seas
B.turn to be parallel to the seas
C.reduce speed
D.increase speed

10.单项选择题When accepting vehicles for shipment,the Master should ensure that().

A.all decks intended for the stowage of vehicles are,in so far as is practicable,free from oil and grease
B.the ship has on board an adequate supply of cargo securing gear,which is maintained in sound working condition
C.vehicles are in apparent good order and condition suitable for sea transport,particularly with regards to securing
D.All of the above