At sea, much of the sailor’s time is spent （）the ship and keeping her equipment in good condition.A、to maintainB、maintainingC、maintenanceD、maintain
At sea, much of the sailor’s time is spent （）the ship and keeping her equipment in good condition.
- A、to maintain
- B、maintaining
- C、maintenance
- D、maintain
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单选题At sea, much of the sailor’s time is spent （）the ship and keeping her equipment in good condition.Ato maintainBmaintainingCmaintenanceDmaintain
单选题At sea, much of the （）time is spent maintaining the ship and her equipment in good condition.Aofficers’Bengineers’Csailors’Dpursers’
单选题With （）, the corrosion problems are much reduced in a central cooling system.Ano equipment in contact with sea waterBless equipment in contact with fresh waterCmore equipment in contact with sea waterDless equipment in contact with sea water
单选题A: Say, I don't think we've met, have we? B: ______ . My name's Donna. A: Nice to meet you, Donna. I'm Tim Clark.AYes, I think soBI haven't seen you for agesCI've heard so much about youDNo, I don't think so
单选题In the Northern Hemisphere you are caught in the dangerous semicircle with plenty of sea room available. The best course of action is to bring the wind on the（）.Astarboard bow and make as much headway as possibleBstarboard quarter，and make as much headway as possibleCport quarter，and make as much headway as possibleDport bow，and make as much headway as possible
问答题Practice 10 Glaciers in Antarctica are melting faster and across a much wider area than previously thought, a development that threatens to raise sea levels worldwide and force millions of people to flee low-lying areas. Researchers once believed that the melting was limited to the Antarctic Peninsula, a narrow tongue of land pointing toward South America. But satellite data and automated weather stations now indicate it is more widespread. The melting also extends all the way down to what is called west Antarctica. By the end of the century, the accelerated melting could cause sea levels to climb by 3 to 5 feet-levels substantially higher than predicted by a major scientific group just two years ago. Making matters worse, the ice shelves that hold the glaciers back from the sea are also weakening. For years, the continent at the bottom of the world seemed to be the only place on the planet not experiencing climate change. Previous research indicated that temperatures across much of Antarctica were staying the same or slightly cooling. The big surprise was exactly how much glaciers are melting in western Antarctica, a vast land mass on the Pacific Ocean side of the continent that is next to the South Pole and includes the Antarctic Peninsula. The glaciers are slipping into the sea faster because the floating ice shelf that would normally stop them—usually 650 t0980 feet thick—is melting. And the glaciers' discharge is making a significant contribution to increasing sea levels. Together, all the glaciers in west Antarctica are losing a total of around 114 billion tons per year because the melting is much greater than the new snowfall. That's equivalent to the current mass loss from the whole of the Greenland ice sheet, New research found that melting glaciers will add at least 7 inches to the world's sea level—and that's if carbon dioxide pollution is quickly capped and then reduced.
单选题Tim is in good shape physically ______ he doesn’t get much exercise.AifBeven thoughCunlessDas long as