更多"Steel is an alloy composed ______of"的相关试题:
[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]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]Iron and steel are flexible. But they are not as flexible ______ rubber.
A. as
B. to
C. for
D. by
[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 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]Iron and steel expands when heated and ______ when cooled.
A. shrinks
B. contracts
C. condenses
D. compresses
[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] When natural gas burns, its___ into atoms of carbon and hydrogen.
A. hydrocarbon molecules, breaking up
B. broke up by hydrocarbon molecules
C. hydrocarbon molecules break up
D. broken up hydrocarbon molecules
[单项选择]The American population is composed of people of different ______ backgrounds.
A. aesthetic
B. ethnic
C. athletic
D. ethic
[单项选择]
The National Committee was composed of 22 manual workers and white-collar workers.（）
A. was made up
B. consisted of
C. was full of
D. instead of
[单项选择]Board of trustees is composed chiefly of laymen because（）
A. they are more likely to represent public interests
B. they have more commonsense and less professional bias
C. their interests are affected by board decisions
D. None of the above
[单项选择]The United States is composed of fifty states, two of ______are separated from the others by land or water.
A. them
B. that
C. which
D. those
[单项选择]A price-weighted series is composed of the following three stocks:
[单项选择]Since mixtures are composed of two or more pure substances, each______ changes state at a different temperature.
A. company
B. companion
C. compound
D. component
[单项选择]No one really knows who composed this piece of music, but it has been ______ to Bach.
A. referred
B. attributed
C. identified
D. associated
