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【单选题】
下列四种放射性同位素中，可用来透照厚度为3-12mm的薄壁管，辐射特性类似100-250KVX射线的是（）
A.
Ir192
B.
Cs137
C.
Co60
D.
Tm17
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参考答案：
举一反三
【单选题】Mars fascinates scientists because of its similarity to Earth, and it fascinates the public because our myth of "Martians" is a vision of life beyond Earth. The Mars 62 continues with the launch of ...
A.
extremes
B.
extracts
C.
terminals
D.
radicals
【单选题】Mars fascinates scientists because of its similarity to Earth, and it fascinates the public because our myth of "Martians" is a vision of life beyond Earth. The Mars 62 continues with the launch of ...
A.
thus
B.
however
C.
so
D.
but
【单选题】下列四种放射性同位素中，可用来透照厚度为2～10mm的薄壁管，辐射特性类似于150～250KVX射线的是（）
A.
192Ir
B.
137Cs
C.
60Co
D.
169Yb
相关题目：
【单选题】Mars fascinates scientists because of its similarity to Earth, and it fascinates the public because our myth of "Martians" is a vision of life beyond Earth. The Mars 62 continues with the launch of ...
A.
extremes
B.
extracts
C.
terminals
D.
radicals
【单选题】Mars fascinates scientists because of its similarity to Earth, and it fascinates the public because our myth of "Martians" is a vision of life beyond Earth. The Mars 62 continues with the launch of ...
A.
thus
B.
however
C.
so
D.
but
【单选题】下列四种放射性同位素中，可用来透照厚度为2～10mm的薄壁管，辐射特性类似于150～250KVX射线的是（）
A.
192Ir
B.
137Cs
C.
60Co
D.
169Yb
参考解析：
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