Ceramics can be produced at than that of competing metal－alloy components_____.

A . Create groups of data B . Sort data in a specific order C . Convert data to a different format D . Retrieve data based on an unknown conditio

A . create groups of data B . sort data in a specific order C . convert data to a different format D . retrieve data based on an unknown conditio

A . a mother ship B . a lifeboat C . a life craft D . all of A,B,C

A . thunderstorms，hail，and then rapid clearing B . increasing cloud cover lasting for several days C . lengthy wet weather D . low ceilings with thick cirrus cloud

A . the heat B . the fuel C . the oxygen D . any of the above

A . project B . design C . draft D . drawing

A . many thousand times B . between times C . one time D . at time

A . many thousand times larger than B . the same as C . many thousand times smaller D . none of the above

A . 正确 B . 错误

A．By telephoning the number provided B．By faxing the request to (813) 502-3461 C．By making an appointment for repair D．By contacting the retailer

A．Hardness B．Brittleness C．Reactivity D．Conductivity

A、On the low pressure side of a 100 knot jetstream core B、Where the horizontal wind shear is 15 knot, in a distance equal to 2.5(longitude C、If the 5(C isotherms are spaced 100NM or closer together

If the body takes in more carbohydrates【C5】______are used for energy, the【C6】______is stored. Two storage places are the liver(肝)and muscles. There is a【C7】______, however, to the amount of carbohydrates they can【C8】______. When they are filled and they always【C9】______be for you to feel your best, excess carbohydrates are changed to fat and【C10】______around the body. If the body does not take【C11】______a sufficient amount of food, it will use its stored fat for energy. If you【C12】______at all, the body would use up all the stored fats and【C13】______it would use its own protein in order to keep【C14】______as long as possible. Therefore, the【C15】______amount of food you eat should be in【C16】______with your energy requirements. It is not necessary,【C17】______, for you to go【C18】______counting calories(卡路里)and weighing food. If a person is the【C19】______weight, it is safe to【C20】______that he is eating enough. 【C1】 A．has B．needs C．does D．is

By this time, the World War II had ended in Europe. But the Japanese refused to surrender, the Americans decided that by dropping an atomic bomb on Japan, they could end the war quickly and save more of their soldier’s lives. Soon after midnight on 6 August 1945, a bomb was dropped on the city of Hiroshima, a civilian target. No warning was given and there was total devastation. Almost all the buildings were destroyed and more than 100000 people died or were horribly wounded. The Japanese military still did not want to surrender so three days later, the Americans dropped a second atomic bomb on the city of Nagasaki, killing 45000 people. The Japanese government was discussing ending the war when they heard the news of Nagasaki. Finally, they surrendered and the World War II came to an end. At first, the scientists who had built the bomb were pleased that it had helped to end the war. However, many would come to realize that they had helped to create the most terrible weapon known to man. The first atomic bomb ______. A．was less powerful B．was dropped in Nagasaki C．was a failure D．was tested in desert