Why a gearbox is needed in a ship driven by a medium-speed d

Electrical supply is always needed even if only for lighting so after a ship goes into service it is extremely rare for the main bus-bars to be dead, it therefore follows that the bus-bars are continuously alive the life of the ship.

A.along

B.with

C.throughout

D.for

Regulations require certain records to be retained on board for at least 3 months after a ship is involved in a casualty or until advised that they are no longer needed on board by the ______.

A.owner

B.Master

C.person in charge

D.Officer in Charge，Marine Inspection

Why did American city residents want to live in the suburbs after World War Ⅱ?

A. Because older American cities were dying.

B. Because they were richer and needed more space.

C. Because cities contained the wont pare of society.

D. Because they could hardly afford a live in the city.

Why did the villagers agree to sell frogs?

A. The frogs were easy money.

B. They needed money to buy visitors.

C. They wanted to please the visitors.

D. The frogs made too much noise.

The ship ______ on a low rock was broken in two by the waves．

A.That had been driven

B.Had been driven

C.Have been driven

D.Which to have been driven

第三组：

Ship recycling contributes to sustainable development and is the environmentally friendly way of disposing of ships with virtually every part of the hull, machinery, equipment, fittings and even furniture being re-used. However, while the principle of ship recycling is a sound one, the reported status of working practices and environmental standards in recycling facilities often leaves much to be desired. Such growing concerns about environmental safety, health and welfare matters in the ship recycling industry have resulted in a growing belief that an international instrument to regulate the ship recycling process is urgently needed.

Having become aware of the need to reduce the environmental, occupational health and safety risks related to ship recycling, as well as the need to secure the smooth withdrawal of ships that have reached the end of their operating lives, the International Maritime Organization (IMO) has taken action to develop a realistic and effective solution to the problem of ship recycling, which will take into account the particular characteristics of international maritime transport and the economic realities.

Which statement of the following is true?

A.Ship recycling is sustainable

B.Ship recycling is very friendly to our environment

C.Ship recycling is the best way to dispose the machinery, equipment, fittings and even furniture on board

D.Ship recycling brings many problems concerning environmental safety, health and______occupational safety