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【简答题】
比例税率即征税对象数额越大，税率越高。（ ）
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【简答题】The population conference in Brasilia has now ended. One of the aims of the conference was for countries from each continent to look back at past experiences and to learn from them for the future. In ...
【简答题】By choosing the most advanced technology, Shanghai aims to become one of the top financial centers in the world.
【简答题】One of the main aims of this type of banking is to encourage s to keep all their business with a single bank.
【单选题】Unilever, one of the world's largest consumer products companies, aims to add ______to life by meeting everyday needs for nutrition, hygiene and personal care.
A.
agent
B.
remain
C.
vitality
D.
leaven
【单选题】波长 l =5000 Å 的光沿 x 轴正向传播,若光的波长的不确定量 D l =10 - 3 Å ,则利用不确定关系式 , 可得光子的 x 坐标的不确定量至少为:
A.
25 cm
B.
50 cm
C.
250 cm
D.
500 cm
【单选题】According to the passage, what is one of the chief aims of education?
A.
It is for students to acquire knowledge.
B.
It is to equip future citizens with scientific technology.
C.
It is to equip future citizens with what is required in getting a position in society.
D.
It is for students to get academic achievements.
【单选题】波长l=5000 Å 的光沿 x 轴正向传播，若光的波长的不确定量Δl=10-3 Å，则利用不确定关系式 Δpx Δx ³h 可得光子的 x 坐标的不确定量至少为
A.
25 cm ．
B.
500 cm ．
C.
50 cm ．
D.
250 cm ．
【单选题】波长l =5000 Å的光沿x轴正向传播,若光的波长的不确定量△λ = Å,则利用不确定关系式 △Px·△X≥h可得光子的x坐标的不确定量至少为
A.
25 cm
B.
50 cm
C.
250 cm
D.
500 cm
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