The passage contains information that would answer which of the following questions？ I . What techniques have industrialists used to manipulate a free market？ II . In what ways are "New World" and " Old World " economic policies similar？ III. Has economic policy in the United States tended to reward independent action？
A. I only
B. II only
C. III only
D. I and II only
E. II and III only
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是()。
A. 液上喷射中倍数泡沫灭火系统
B. 液下喷射低倍数泡沫灭火系统
C. 液上喷射低倍数泡沫灭火系统
D. 液下喷射中倍数泡沫灭火系统
The passage suggests which of the following about the workers who took temporary jobs during the 1980s？
A. Their jobs frequently led to permanent positions within firms.
B. They constituted a less demographically diverse group than has been suggested.
C. They were occasionally involved in actions organized by labor unions.
D. Their pay declined during the decade in comparison with the pay of permanent employees.
E. They did not necessarily prefer temporary employment to permanent employment .
下列基础分类中，属于按照受力特点分的基础为()。
A:B.砖基础
B:A.刚性基础
C:D.毛石基础
D:C.独立基础
在焊接过程中，由于不均匀的加热和冷却过程中产生的变形称为焊接变形。()
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