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单选题
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
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When traveling, you are advised to take travelers’ checks, which provide a secure ____to carrying your money in cash.A. substitute B. preference C. selection D. alternative
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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 pipelinesB.having the cargo too coolC.explosion of vapors after dischargeD.inadequate ullage space
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You are carrying triethylamine，methyl methacrylate and isoprene in your multiple-product tanker. Which of the following statements is true?A.Isoprene may be carried in a cargo tank adjacent to either of the other two cargoesB.Methyl methacrylate may not be carried in a tank adjacent to a pump roomC.Methyl methacrylate must usually be heated to maintain its stabilityD.Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine
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You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE?A.Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB.The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC.The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD.Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
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Your tow includes a barge carrying chlorine．Which special requirements must be observed ________．A.The wing voids shall not be opened when underwayB.You must post a deckhand to keep a special watch on this bargeC.A cargo information card for chlorine must be in the pilothouseD.All of the above
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Your tow contains a barge carrying carbon tetrachloride．What is NOT required ________．A.Cargo warning signs on bargeB.Cargo information card on bargeC.Cargo information card in pilothouseD.Certificated tankerman on towboat
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Regulations require that cargo pumps in tankers carrying grade D liquid cargo shall be isolated from sources of vapor ignition by ______．A.CofferdamsB.Gastight bulkheadsC.Passageways or living quartersD.General cargo spaces
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Which spaces are required to be segregated from cargo tanks carrying grades A，B，C，or D cargoes ________．A.Pump roomsB.Enclosed deck spacesC.CofferdamsD.Navigation spaces
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You are on a tanker designed to carry molten sulfur．Which statement is TRUE ________．A.There must be two portable toxic vapor detectors on boardB.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volumeC.Cargo temperature may be taken by portable thermometersD.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them
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Your tanker is carrying a cargo of styrene．Which of the following is NOT a requirement for carriage of this cargo ________．A.P/V valves with galvanized parts must be replacedB.Authorization to carry styrene must be endorsed on the Certificate of InspectionC.You must have a Certificate of Inhibition provided by the shipperD.The cargo tank heating coils must be blanked off
考题
The moisture equilibrium chart can be used to determine the ______．A.Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsB.Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityC.Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoD.Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
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Bulk cargo refers to ______.A.cargo which occupies a large volume of spaceB.cargo which requires refrigerationC.cargo which is very denseD.homogeneous cargo not enclosed in a container
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Topside paint is applied to the area of the ship’s （）which is out of water when the ship is loaded.A、hullB、cabinC、cargo holdD、deck
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单选题Regulations require that cargo pumprooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems which can completely change the air in （）.A
1 minuteB
3 minutesC
5 minutesD
10 minutes
考题
单选题Deadweight，which is the cargo carrying capacity of a vessel in tons，is determined by（）.A
Loaded displacement minus light displacementB
Gross tonnage minus net tonnageC
Loaded displacement minus net tonnageD
Light displacement minus the weight of the vessel
考题
单选题You are cleaning the tanks after carrying a cargo of crude oil. Which statement is TRUE? （）A
Washing water should be recirculated if possible because it has the same electric potential as the cargo tank being cleanedB
The hoses to portable cleaning machines should be disconnected before the machines are removed from the tankC
The principal hazard with steaming cargo tanks is raising the ambient temperature above the flame point of the cargo residueD
Steam cleaning and water washing are both capable of generating electrostatic charges within a tank
考题
单选题A ship is responsible for the cargo loaded or unloaded（）.A
only when the cargo is within its railB
after the cargo is checked by tallymenC
as soon as the cargo loading or unloading beginsD
during the time when loading or unloading is going on
考题
单选题You are carrying triethylamine，methyl methacrylate and isoprene in your multiple-product tanker. Which of the following statements is true? （）A
Isoprene may be carried in a cargo tank adjacent to either of the other two cargoesB
Methyl methacrylate may not be carried in a tank adjacent to a pump roomC
Methyl methacrylate must usually be heated to maintain its stabilityD
Portable thermometers are not permitted to be used to take the cargo temperature of triethylamine
考题
单选题Regulations require that cargo pumps in tankers carrying grade D liquid cargo shall be isolatedfrom sources of vapor ignition by（）.A
cofferdamsB
gastight bulkheadsC
passageways or living quartersD
general cargo spaces
考题
单选题When a cargo boom or crane is rated at varying capacities，there will be a table at the controls which relates safe working load to（）.A
winch speedB
boom strengthC
load radiusD
cable strength
考题
单选题In ballast means that the ship is（）.A
loaded with cargoB
in dangerC
not carrying cargoD
discharging cargo
考题
单选题The force acting on a single cargo runner which is vertically lifting or lowering a load is greatest when（）.A
decelerating when lowering the loadB
decelerating when raising the loadC
lowering the load at constant speedD
raising the load at constant speed
考题
单选题In order to minimize the effects of a tender vessel，when carrying a cargo of lumber，you should（）.A
maximize your deck loadB
distribute lumber so that those stowing most compactly per unit of weight are in the upper holdsC
place the heaviest woods in the lower holdsD
keep the vessel's frame spaces free from lumber
考题
单选题The moisture equilibrium chart can be used to determine the（）.A
Absolute moisture content of the air surrounding a hygroscopic cargo when moisture equilibrium existsB
Dew point temperature that the air surrounding a hygroscopic commodity will have when in moisture equilibrium with that commodityC
Enthalpy of the air surrounding a hydroscopic cargo which is in moisture equilibrium with the cargoD
Temperature at which moisture equilibrium will occur in a cargo hold containing a hygroscopic cargo
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单选题Air compressors are NOT permitted in which space(s) on a tank barge carrying grade A cargo?（）A
A cargo handling roomB
A space in which cargo hose is storedC
An enclosed space containing cargo pipingD
All of the above
考题
单选题Battens are fitted in cargo holds across the frames of the vessel from the turn of the bilge upward. The purpose of these cargo battens is（）.A
for securing a snatch block when snaking cargo into the wings of the holdB
to prevent cargo from coming in contact with the vessel's frames or shell platingC
tp prevent fittings to which cargo lashing may be securedD
to support the dunnage floors which are laid down between tiere of cargo
考题
单选题When travelling, you are advised to take travellers’ checks, which provide a secure_____ to carrying your money in cash.A
substituteB
selectionC
preferenceD
alternative
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