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更多“Due to its good heat resistance ,when cutting with carbide tools, generally do not add cutting fluid”相关的问题
A.Growth
B.maturity
C.introduction
D.decline
A．正确
B．错误
此题为判断题(对，错)。
I don't think there is any surprise that the Chinese are saying that they are good to build their own aircraft in due course. But I think it would at least a couple of decades before they have an aircraft that makes any meaningful dent in the market: and quite possibly several decades.
Which of the following statement is closest in meaning to the passage you have just heard？
A．China has never hidden its desire to become a major force in the aviation in airspace industries.
B．China made an announcement that plans to make its own passenger jet.
C．China can develop its own aircraft in a short time due to its great economic power.
D．It would take possibly several decades for China to make its own aircraft that make dent in the market.
听力原文： It is difficult to give an accurate definition of "temperature", but we can try. Temperature is not the total amount of heat in a thing but the intensity of its heat at a certain time. When we measure temperature we do not measure the quantity of heat but its intensity. A large pan of boiling water obviously contains more heat than a smaller pan of boiling water, but their temperatures arc the same. The water in both pans has a temperature of 100 degrees Celsius.
To measure temperature accurately we need good instruments. The accuracy of a measurement depends partly on the instrument, which is used. Most instruments used to measure temperature are called thermometers. In measure thermometers two scales are used, the Fahrenheit scale and the Celsius scale. American doctors find the Fahrenheit scale convenient for measuring the temperature of the body, but other doctors and scientists often use the Celsius scale. The boiling points of water are different on the two scales. On the Celsius scale, water boils at 100 degrees. On the Fahrenheit scale it boils at 212 degrees.
(30)
A．Temperature is the total amount of heat in a thing at a certain time.
B．Temperature is the intensity of heat in a thing at a certain time.
C．Temperature is the quantity of heat in a thing at a certain time.
D．We can hardly give a definition of "temperature."
(28)
A．The store should compensate me for the suit.
B．Even though the suit was of bad quality, I would take it due to its low prices.
C．Soon after I bought the coat, I had it shortened to fit my size.
D．The store refused to take my suit of inferior quality.
The Rules for Making Good Biluo Chun Tea
1． Draw cold water fronl the tap；
2． When the kettle boils,heat the teapot,keeping its inside as dry as possible；
3． Put the tea in the teapot.The amount will vary according to the number of people and the strength which they like their tea.As a general rule,use one teaspoonful for each person and an extra"one for the pot"；
4． Pour the boiling water on to the tea and stir well；
5． Place a cozy over teapot；
6． Leave the tea to infuse for five minutes；
7． Put milk and sugar(if required)in the teacups；
8． Start pouring the tea into the cups and then,half filling them,and then top up the teapot with freshly boiled water.Fill the cups and then up the teapot again if the second cup of tea is required.
A．In every country that uses wood for heating, wood is used to provide only part, not all, of the heat for a home.
B．Every country that has ever used wood for heating has depleted its forests before the forests were able to regenerate themselves.
C．Every country that has used wood for home heating has done so only because it possessed a limited amount of other natural resources.
D．Many countries that use wood primarily for heating have a high incidence of fires that are due to improperly installed wood stoves.
E．In some countries the wood that would be used for home heating is owned by the government.
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