A.It directed air at melted iron in a furnace, removing all impurities.
B.It slowly heated iron ore then stirred it and heated it again.
C.It changed iron ore into iron which was a substitute for steel.
D.It could quickly find deposits of iron ore under the ground.
A.cheaper and more plentiful
B.lighter and easier to mold
C.cleaner and easier to mine
D.stronger and more durable
开始考试点击查看答案A.strong Puritan beliefs
B.equality of men and women
C.the encouragement of nonconformity
D.the appreciation of poetic creativity
开始考试点击查看答案A.physical illness
B.a failed love affair
C.religious fervor
D.her dislike of people
开始考试点击查看答案A.criticized most of her poems
B.ignored her innocence and emotional fragility
C.seen her life in romantic terms
D.blaming her parents for restricting her activities
开始考试点击查看答案A.Refusing to eat.
B.Wearing only white.
C.Avoiding visitors.
D.Staying in her room.
开始考试点击查看答案A.In Pittsburgh.
B.In the Mesabi Range.
C.Near Lake Michigan.
D.Near Lake Eri
开始考试点击查看答案A.Trains.
B.Planes.
C.Boats.
D.Trucks.
开始考试点击查看答案A.a decline in the railroad industry
B.a revolution in the industrial world
C.an increase in the price of steel
D.a feeling of discontent among steel workers
开始考试点击查看答案A.The drawbacks of descriptive and inferential statistics.
B.Applications of inferential statistics.
C.The development and use of statistics.
D.How to use descriptive statistics.
开始考试点击查看答案A.To point out that parents can teach their children statistics.
B.To introduce inferential statistics.
C.To explain that there are different kinds of variables.
D.To present the background of statistics in a humorous and understandable way.
开始考试点击查看答案注册咨询工程师注册咨询工程师项目决策分析与评价项目决策分
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