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【单选题】
用氘核轰击铍靶，产生的是（）
A.
质子
B.
快中子
C.
π负介子
D.
氮离子
E.
氖离子
题目标签：轰击
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【单选题】Children live in a world in which science has tremendous importance. During their lifetimes it will affect them more and more. In time, many of them will work at jobs that depend heavily on science—fo...
A.
science is linked with many of the things they meet
B.
science is a very easy subject for them to learn
C.
they encounter the facts and principles of science daily
D.
they are familiar with the process and spirit of science
相关题目：
【单选题】Children live in a world in which science has tremendous importance. During their lifetimes it will affect them more and more. In time, many of them will work at jobs that depend heavily on science—fo...
A.
science is linked with many of the things they meet
B.
science is a very easy subject for them to learn
C.
they encounter the facts and principles of science daily
D.
they are familiar with the process and spirit of science
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