下列关于信用衍生工具的论述中，正确的有（）。

材料：

Every new crude oil tanker of 20000 tons deadweight and above shall be fitted with a cargo tank cleaning system using crude oil washing．The Administration shall undertake to ensure that the system fully complies with the requirements of MARPOL within one year after the tanker was first engaged in the trade of carrying crude oil or by the end of the third voyage carrying crude oil suitable for crude oil washing，whichever occurs later．Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall operate the system in accordance with the requirements of that Regulation．

Every existing crude oil tanker of 40000 tons deadweight and above shall be provided with segregated ballast tanks．Existing crude oil tankers may，in lieu of being provided with segregated ballast tanks，operate with a cargo tank cleaning procedure using crude oil washing unless the crude oil tanker is intended to carry crude oil which is not suitable for crude oil washing．

Existing crude oil tankers may，in lieu of being provided with segregated ballast tanks or operating with a cargo tank cleaning procedure using crude oil washing，operate with dedicated clean ballast tanks in accordance with the provision of Regulation 13A of this Annex for the following period：for crude oil tankers of 70 000 tons deadweight and above，until two years after the date of entry into force of the present Convention；and for crude oil tankers of 40000 tons deadweight and above but below 70 000 tons deadweight，until four years after the date of entry into force of the present Convention．

问题：

A new crude oil tanker of 30000 tons deadweight shall ________．

A.be fitted with crude oil washing system

B.operate dedicated clean ballast tanks

C.be fitted with segregated ballast tanks

D.be fitted with washing system other than crude oil washing system

Except________，the existing crude oil tankers may operate with any of the following installations．A.segregated ballast tanks

B.cargo tank cleaning procedure using crude oil washing

C.operate with dedicated clean ballast tanks

D.protection position

The latest date for an existing crude oil tanker of 60000 tons deadweight to install dedicated clean ballast tanks is ________．A.until two years after the date of entry into force of the present Convention

B.until four years after the date of entry into force of the present Convention

C.within one year after the tanker was first engaged in the trade of carrying crude oil

D.by the end of the third voyage carrying crude oil

It is inferred that ________．A.all oil tankers，both the newly built and existing ones，shall be fitted with a cargo tank cleaning system using crude oil washing

B.a new crude oil tanker of 20 000 tons deadweight and above may，in lieu of being provided with crude oil washing system，operate with segregated ballast tanks

C.a new crude oil tanker of 20 000 tons deadweight and above may，in lieu of being provided with crude oil washing system，operate with dedicated clean ballast tanks

D.a new crude oil tanker of 20 000 tons deadweight and above shall not be fitted with a cargo tank cleaning system using crude oil washing immediately after her entry in the trade of carrying crude oil

请帮忙给出每个问题的正确答案和分析，谢谢！

either required to have a crude oil washing system or where the owner or operator chooses to install a crude oil washing system．

A.cargo loading operations

B.cargo unloading operations

C.cargo control operations in the transport

D.crude oil washing

il tanker shall ______ the system in accordance with the requirements of that Regulation．

A.operate

B.check

C.install

D.overhaul

材料：

The crude oil washing installation and associated equipment and arrangements shall comply with the requirements established by the Administration．

Such requirements shall contain at least all the provisions of Specifications for the Design，Operation and Control of Crude Oil Washing Systems adopted by the International Conference on Tanker Safety and Pollution Prevention，1978，in Resolution 15 and as may be revised by the Organization．

An inert gas system shall be provided in every cargo tank and slop tank in accordance with the appropriate Resolutions of Chapter II-2 of SOLAS．

With respect to the ballasting of cargo tanks，sufficient cargo tanks shall be crude oil washed prior to each ballast voyage in order that，taking into account the tanker&39;s trading pattern and expected weather conditions，ballast water is put only into cargo tanks which have been crude oil washed. Every oil tanker operating with crude oil washing systems shall be provided with an Operations and Equipment Manual detailing the system and equipment and specifying operational procedures．Such a Manual shall be to the satisfaction of the Administration and shall contain all the information set out in the Specifications referred to in this Regulation．If an alteration affecting the crude oil washing system is made，the Operations and Equipment Manual shall be revised accordingly．

问题：

According to this passage，with respect to the ballasting of cargo tanks，ballast water is put only into ________．

A.slop tanks which have been cleaned with water

B.gas freed cargo tanks

C.inertized cargo tanks

D.cargo tanks which have been crude oil washed

________ shall be approved by the Administration．A.Specifications for the Design，Operation and Control of Crude Oil Washing Systems

B.Appropriate Resolutions of Chapter II-2 of SOLAS

C.An Operations and Equipment Manual detailing the crude oil washing system and equipment and specifying operational procedures

D.International Conference on Tanker Safety and Pollution Prevention，1978

This paragraph is most likely extracted from________．A.MARPOL 73/78

B.SOLAS

C.IBC

D.IGC

It can be concluded that ________．A.it is not necessary to do crude oil washing prior to ballast voyage

B.taking into account the tanker's trading pattern and expected weather conditions，it is sometimes necessary to do crude oil washing after each ballast voyage

C.if it is possible ballast water shall always be put into cargo tanks prior to commencing their crude oil washing operations

D.sufficient cargo tanks shall be crude oil washed prior to each ballast voyage in order that the tanker could be kept properly ballasted without breaking any regulations in connection with ballasting of cargo tanks

请帮忙给出每个问题的正确答案和分析，谢谢！

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

_____．

A.Strip all tanks and remove the bottom residue

B.Use an inert gas system while washing tanks

C.Use portable washing machines to reach areas obscured by structural members in the tanks

D.Debottom the tank used as the source for the tank cleaning machines

o tank cleaning system using ______．

A.Hot water

B.Cold water

C.Chemicals

D.Crude oil washing

running to the washing machines ________．

A.Open a COW nozzle forward and one aft and drain the line into the after tank by gravity

B.Blow the line out using compressed air

C.Pull a suction using the supply line pump

D.Close off all valves in the system and leave the oil in the line primed for the next crude oil wash

Crude oil washing of cargo tanks has the following advantages except for .

A.reducing the erosion of the cargo tanks

B.increasing the total quantity of oil to carry

C.reducing the quantity of water contained in oil

D.reducing cargo discharged time

chieved by a ship’s inert gas system, prior to the commencement of crude oil tank washing？

A.6%

B.8%

C.10%

D.12%