The MARPOL Convention is the main inte

1、The text is mainly about .

The text is mainly about .Awater supply and increasing populationBwater use management and agricultureCwater redistribution and wildlife protectionDwater shornages and environmental protection.

2、What is the main purpose of the passag

What is the main purpose of the passage?ATo show us the hidden beauty in our world.BTo warn us not to get lost in the fantasy wonderCTo argue against the misuse of the sense of wonderDTo discuss the influence of the world of make-believe

3、The Convention is the first to establi

The Convention is the first to establish basic requirements on training certification and watch-keeping for seafarers on an international level（）AA.STCW78BB.STCW95CC.SOLAS74DD.SOLAS88

4、The SOLAS Convention is the main inter

The SOLAS Convention is the main international convention（）Aabout marine pollution preventionBcovering safety of lifeCabout marineDabout ship and port security

5、The（）is fitted in the main steam suppl

The（）is fitted in the main steam supply line and is usually of the non-return type.Amain steam stop valveBauxiliary steam stop valveCfeed check or control valveDblow down valve

6、Which of the following is the main poi

Which of the following is the main point of the text?A［A］ The development of the Internet.B［B］ The possibility of space research.C［C］ Universal information superhighway.D［D］ The technological advances of the Mars mission.