一起答
单选

What is classified as a combustible liquid ________.

  • A.Acetaldehyde
  • B.Ethyl alcohol
  • C.Carbon tetrachloride
  • D.Tetramethylene glycol
参考答案
查看试卷详情
相关试题
  1. 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 replaced
    • B.Authorization to carry styrene must be endorsed on the Certificate of Inspection
    • C.You must have a Certificate of Inhibition provided by the shipper
    • D.The cargo tank heating coils must be blanked off
  2. You are planning to use the crude oil washing system on your tanker.What is required to prevent electrostatic buildup in the tanks ________.

    • A.The portable machines should be set at the proper drop for the first wash before the fixed machines are used
    • B.The tank used as the source for the tank cleaning machines should be debottomed for at least one meter
    • C.The inert gas system must reduce the oxygen content in the tank to at least 18%
    • D.The fixed machines must be operated simultaneously with the portable machines to equalize the electrostatic potential
  3. Your tanker is fully loaded,and you find that she is down slightly by the head.To adjust the trim,you may ______.

    • A.Add ballast aft
    • B.Load more cargo aft
    • C.Shift cargo aft
    • D.All of the above
  4. You are on a vessel that carries liquefied gasses in bulk.The person on watch is required to have what information about the cargo easily accessible ________.

    • A.Port of loading
    • B.Exact quantity on board
    • C.Name and address of consignee
    • D.Firefighting procedures
  5. You are planning to use a crude oil washing system.What precaution must be taken with the tank as the source for the washing machines ________.

    • A.It must be debottomed and the level lowered by at least one meter
    • B.The oil in the source tank must be sampled for compatibility
    • C.The source tank must have been crude oil washed at least once in the past 150 days
    • D.The inert gas system must lower the oxygen content to a maximum of 12% oxygen in the tank
  6. You are on a tanker discharging oil.When all of the oil that the main cargo pumps can handle is pumped out of a tank,the remainder is ______.

    • A.Stripped out and pumped directly ashore into the mainline as the remaining cargo tanks are pumped out with the main pumps
    • B.Stripped to one tank and then pumped out with the main pumps
    • C.Stripped out and pumped directly ashore after all the tanks have been emptied by the main pumps
    • D.Gravitated to the centers from the wings and pumped out with the main pumps
  7. Your tanker is loaded down to her marks,and you find that she has too much trim by the stern.To adjust the trim,you may ______.

    • A.Add ballast forward
    • B.Load more cargo forward
    • C.Shift bunkers forward
    • D.All of the above
  8. You are on a cargo vessel carrying toluol in bulk in portable tanks.Which is a requirement for pumping the toluol ________.

    • A.Hose connections to the tank must be made with a minimum of three bolts
    • B.There must be water pressure on the fire main
    • C.You must shut down if another vessel comes alongside
    • D.If transferring at anchor,you must display a red flag by day and a red light at night
  9. You are on a multiple-product chemical tanker with orders to load diethylamine.What is NOT a requirement for transporting this cargo ________.

    • A.You must have two toxic vapor detectors or the pumproom must meet special requirements
    • B.Each crew member must be provided with an emergency escape breathing apparatus
    • C.A person taking cargo samples must wear protective clothing
    • D.If you are also carrying allyl alcohol,the venting systems must be segregated
  10. You are on a tanker designed to carry molten sulfur.Which statement is TRUE ________.

    • A.There must be two portable toxic vapor detectors on board
    • B.The cargo tank ventilation system must maintain the H2S vapor concentration at 1.85% or more by volume
    • C.Cargo temperature may be taken by portable thermometers
    • D.The pressure in the heating coils in the tanks must be less than that of the cargo exerted on them