The set of the ocean current is caused by（）.

A . evidence of the contract of carriage B . ocument C . trading record D . bill

A . Bridge transport B . land transport C . land bridge transport D . cross continent transport

A . Manning requirements B . Minimum freeboard permitted C . Grade(s) of cargoes that the vessel may carry D . Waters upon which the vessel may be operated

A . fetch B . distant winds C . local storms D . the pull of the moo

A . evidence of the contract of carriage B . Document C . trading record D . Bill

A . speed of the current at a particular time B . maximum speed of the current C . direction from which the current flows D . direction in which the current flow

A . in an area of high density the water's surface is lower than in an area of low density B . surface water flows from an area of high density to one of low density C . the lesser the density gradient the freer the water is to move D . it is the density differences that cause the currents to stay in the trough

A . the density of the water B . the air temperature C . the presence of a high pressure area near it D . underwater soil conditio

A . humidity B . varying densities of water C . vessel traffic D . the jet stream

A . high density will be on the left in the Northern Hemisphere B . high density will be on the right in the Southern Hemisphere C . low density will be on the left in the Northern Hemisphere D . low density will be on the left in the Southern Hemisphere

A.speed of the current at a particular time B.maximum speed of the current C.direction from which the current flows D.direction in which the current flows

A、a large body of salt water that covers approximately 70% of the earth’s surface B、appears different shades of blue C、often with waves and currents D、contains various types of plant and marine animal life E、peace F、tranquility G、expansiveness H、the unknown I、the power of nature 此题为多项选择题。

A．Free From Particular Average B．With Particular Average C．War Risk D．All R isks

A．largest B．large C．larger D．the largest

A．north and east B．south and east C．north and west D．north and east

The ocean bottom (a region nearly 2.5 times greater than the total land area of the Earth) is a vast frontier that even today is largely unexplored and uncharted. Until about a century ago, the deep-ocean floor was completely inaccessible, hidden beneath waters averaging over 36,000 meters deep. Totally without light and subjected to intense pressures hundreds of times greater than at the Earth's surface, the deep-ocean bottom is a hostile environment to humans, in some ways as forbid- ding and remote as the void of outer space. Although researchers have taken samples of deep-ocean rocks and sediments for over a century, the first detailed global investigation of the ocean bottom did not actually start until 1968, with the beginning of the National Science Foundation's Deep Sea Drilling Project (DSDP). Using techniques first developed for the offshore oil and gas industry, the DSDP's drill ship, the Glomar Challenger, was able to maintain a steady position on the ocean's surface and drill in very deep waters, extracting samples of sediments and rocks from the ocean floor. The Glomar Challenger completed 96 voyages in a 15-year research program that ended in November 1983, During this time, the vessel logged 600,000 kilometers and took almost 20,000 core samples of seabed sediments and rocks at 624 drilling sites around the world. The Glomar Challenger's core samples have allowed geologists to reconstruct what the planet looked like hundreds of millions of years ago and to calculate what it will probably look like millions of years in the future. Today, largely on the strength of evidence gathered during the Glomar Challenger's voyages, nearly all earth scientists agree on the theories of plate tectonics and continental drift that explain many of the geological processes that shape the Earth. The cores of sediment drilled by the Glomar Challenger have also yielded information critical to understand the world's past climates. Deep-ocean sediments provide a climatic record tracing back hundreds of millions of years, because they are largely isolated from the mechanical erosion and the intense chemical and biological activies that rapidly destroy much land-based evidence of past climates. This record has already provided insights into the patterns and causes of past climatic change information that may be used to predict future climates. The author compare the ocean bottom to a "frontier" in paragraph 1 because it______. A．is a quite promising place. B．is out of the understanding of many scientists. C．attracts courageous explorers. D．is an unknown research area to the scientists.

A．unanimous B．abstract C．autonomous D．almighty

A．the ocean was immune to any pollution then B．they didn't know what would come of if the ocean was deadly disrupted C．there was no computer then D．there wasn't any problem with ocean at that time 此题为多项选择题。

是 否

A．Atlantic Ocean B．Arctic Ocean C．Indian Ocean D．Antarctic Ocean

A、a packing list B、cargo declaration C、a seaway bill D、a through bill of lading