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"同位素"相关考试题目
1.
自然界中碳有三种同位素：碳-12，碳-13和碳-14。
2.
开放型放射性同位素操作中的防护主要是
3.
同位素施工前必须测自然伽玛基线。
4.
下列属于同位素的一组是
5.
For more than thirty years after astronauts first set foot on the Moon, scientists have been unable to unravel the mystery of where the Earth’s only satellite came from. But now there is direct eviden...
6.
已知铱的一种同位素是77191Ir,则其核内的质子数是()
7.
放射性同位素
8.
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 ...
9.
下列互为同位素的一组是（ ） A．O2和O3 B． C．C2H6与C2H4 D．CH3—CH2—CH2—CH3与
10.
天然铀有哪几种同位素()
11.
氢元素有（）同位素。
12.
下列物质属于同位素的一组是（ ）
13.
下列互为同位素的一组是
14.
【名词解释】钌的主要放射性同位素
15.
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 o...
16.
Analysis of ice cores drilled from the glaciers of the Tibetan plateau shows that the region is warmer now than any other time since the so-called "Holocene maximum", between 6,000 and 8,000 years ago...
17.
同位素的定义是
18.
开放型放射性同位素操作中的防护主要是：（）
19.
何谓放射性同位素？
20.
同位素是指( )。
21.
连铸机结晶器用Cs-137同位素检测结晶器内( )。
22.
自然界中硼同位素有10B及11B，若平均原子量为10.76，则11B之含量百分率为（）
23.
同位素中（）。
24.
何谓放射性同位素？
25.
同位素均有放射性。
26.
下列有关同位素的叙述中,正确的是( )
27.
同位素
28.
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 ...
29.
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 ...
30.
The History of the Atomic Bomb On August 2, 1939, just before the beginning of World War II, Albert Einstein wrote to then President Franklin D. Roosevelt. Einstein and several other scientists told R...
31.
元素之两个同位素原子，其性质不同者为（）
32.
氢的同位素有 ( )
33.
今有氧的同位素16O、17O、18O，氢的同位素H、D，从水分子的原子组成来看，可组成的水分子可以有
34.
下面哪组属于同位素 ()
35.
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...
36.
在核爆炸中使用的同位素有________________、________________、________________。
37.
同位素32P与35S可以放在一起，但3H、125I不能放在一起。()
38.
常用的放射性同位素不包括（）。
39.
Passage One For more than thirty years after astronauts first set foot on the Moon, scientists have been unable to unravel the mystery of where the Earth’s only satellite came from. But ...
40.
【名词解释】同位素
41.
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 ...
42.
下列同位素半衰期最长的是( )。
43.
硫同位素国际标准的缩写符号是：（）。
44.
（2分）在 Li、 N、 Na、 Mg、 Li、 C中 和 互为同位素。
45.
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 ...
46.
今有氧的同位素16O、17O、18O，氢的同位素H、D，从水分子的原子组成来看，可组成的水分子可以有
47.
同位素（）
48.
SHRIMP测试使用的同位素是钾和氩。
49.
The History of the Atomic Bomb On August 2, 1939, just before the beginning of World War Ⅱ, Albert Einstein wrote to then President Franklin D．Roosevelt．Einstein and several other scientists told Roos...
50.
镭的所有同位素中，不是天然放射性同位素的是（）
