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【单选题】
Refer to Exhibit 3-7. If the economy moves from Point C to Point A in the diagram:A.
more prison cells are created.
B.
more classrooms are created.
C.
it sacrifices an increasing quantity of classrooms per prison cell produced the further the movement toward Point
D.
there is no net change in the number of prison cells and classrooms, as all points on the frontier are equally efficient.
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【单选题】Questions 2
A.
Some of their prisoners are allowed to study outside the prison grounds.
B.
Most of their prisoners are expected to work.
C.
Their prisoners are often sent to special centers for skill training.
D.
Their prisoners are allowed freedom to visit their families.
【多选题】改善混凝土和易性的方法有( )。
A.
在水灰比不变的条件下，减少混凝土单位体积中的水泥浆数量
B.
选择合理砂率
C.
在其他都满足的情况下，优选卵石
D.
骨料级配好
E.
混凝土浇筑后，保持良好的温、湿度
【单选题】Questions 2
A.
Thursday morning.
B.
Thursday afternoon.
C.
Monday morning.
D.
Monday afternoon.
【单选题】In a nationwide poll, P people were asked 2 questions. If 2/5 answered 'yes' to question 1, and of those 1/3 also answered 'yes' to question 2, which of the following represents the number of people p...
A.
2/15 P
B.
3/5 P
C.
3/4 P
D.
5/6 P
E.
13/15 P
【简答题】在保证混凝土强度不变及水泥用量不增加的条件下，改善和易性的最有效的方法是______、______、______。
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【单选题】Questions 2
A.
Thursday morning.
B.
Thursday afternoon.
C.
Monday morning.
D.
Monday afternoon.