单选题An oil tanker with dedicated clean ballast tanks shall have adequate tank capacity dedicated solely to the carriage of（）as defined.A clean ballastB crude oilC fresh waterD fuel oil

In no case shall ballast water be carried in cargo tanks，______ on those rare voyages when weather conditions are so severe that，in the opinion of the master，it is necessary to carry additional ballast water in cargo tanks for the safety of the ship.

A.besides

B.in particular

C.incase of

D.except

An oil tanker operating with dedicated clean ballast tanks shall be equipped with ______，approved by the Administration on the basis of specification recommended by the Organization，to enable supervision of the oil content in ballast water being discharged．

A.An oil content meter

B.An oil checker

C.An analyzer of oil content

D.A mixer of oily water

A segregated ballast system is a system where

A.all ballast is processed through the oily water separator

B.ballast is taken on and discharged through a separate main deck

C.ballast and cargo tanks are separated by cofferdams

D.all ballast lines, tanks, and pumps are independent of those used for oil

The capacity of the segregated ballast tanks shall be ______ determined that the ship may operate safely on ballast voyages without recourse to the use of cargo tanks for water ballast except as provided otherwise．

A.Such

B.As

C.So

D.Well

Every existing product carriers of 40，000 tons deadweight and above shall be provided with segregated ballast tanks and shall comply with the specified requirements，or，alternatively，operate with ______ in accordance with the convention．

A.crude oil washing

B.dedicated clean ballast tanks

C.cargo tank cleaning system

D.oil record book

An oil tanker with dedicated clean ballast tanks shall have adequate tank capacity dedicated solely to the carriage of ______ as defined.

A.clean ballast

B.crude oil

C.fresh water

D.fuel oil

Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall ______ the system in accordance with the requirements of that Regulation．

A.operate

B.check

C.install

D.overhaul

In the case of new crude oil tankers，the additional ballast permitted shall be carried in cargo tanks only if such tanks have been ______ before departure from an oil unloading port or terminal.

A.inerted

B.crude oil washed

C.diluted

D.cleaned

Existing crude oil tankers may，______ 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 specified provision of the Regulation．

A.As per

B.In the consequence of

C.In accordance with

D.In lieu of

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！