更多"Iron and steel are flexible. But th"的相关试题:
[单项选择]Pigiron, wrought iron, and steel contain iron carbides made up of ______ of carbon.
A. (amounts are different
B. ( different amounts that
C. ( different amounts
D. ( which amounts are different
[单项选择]The wrongly-designed iron-steel bridge was finally
A. shipped away
B. sold at a low price
C. made into many rings
D. used again after repairing
[单项选择]An iron and steel works, with several satellite factories, ______ in that city now.
A. is built
B. is being built
C. were built
D. are being built
[单项选择] ____ is rooted in experiments in iron and steel conducted in the nineteenth century.
A. While the history of twentieth-century architecture
B. The history of twentieth-century architecture
C. That the history of twentieth-century architecture
D. Both twentieth-century architecture and its history
[单项选择]Steel is an alloy composed () of iron and carbon.
A. primarily
B. traditionally
C. carefully
D. partially
[单项选择]Iron and steel expands when heated and ______ when cooled.
A. shrinks
B. contracts
C. condenses
D. compresses
[单项选择]Steel is _____ from iron which contains a certain amount of carbon.
A. composed
B. consisted
C. made
D. produced
[单项选择]Steel works are encouraged to purchase ______ iron so as to reduce the consumption of natural resources.
A. scrap
B. scrape
C. scratch
D. snap
[单项选择]Steel is an alloy composed ______of iron and carbon.
A. primarily
B. traditionally
C. carefully
D. partially
[单项选择]At present, there is a ______ of iron and steel and more must be produced.
A. Limit
B. loss
C. poverty
D. scarcity
[单项选择]English iron smelters and English iron manufacturers were both opposed to _______.
A. high import taxes on American pig iron
B. the growth of iron manufacturing in America
C. the shipping of iron products to America
D. selling English wool to the colonists
[单项选择]The construction o f a 5-million-ton iron and steel works is now under ().
A. conclusion
B. contribution
C. continuation
D. consideration
[单项选择]Graham-Steel杂音见于
A. 二尖瓣狭窄
B. 主动脉瓣狭窄
C. 二尖瓣关闭不全
D. 主动脉瓣关闭不全
E. 相对性三尖瓣关闭不全
[单项选择]Ice skates manufactured entirely of iron were first sold in the 1800's.
A. mainly
B. successfully
C. solely
D. routinely
[单项选择]Dawson was dissatisfied with soft iron pitons because ______. ( )
[单项选择]The hill was once rich with iron.
A. abundant
B. destitute
C. enough
D. sufficient
[单项选择]A shift from native bronze to iron artifacts took place under the influence of cultur al borrowings.
A. transition
B. transmission
C. transaction
D. transference