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【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
it can provide massive nucleons.
B.
it is like a huge detecting apparatus.
C.
it enables neutrinos to move more actively.
D.
it can keep away the interference of other particles.
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
their ability to escape from different regions of space.
B.
their inability to penetrate dense matter.
C.
the similarity of their structure to that of nucleons.
D.
the infrequency of their interaction with other matter.
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
have been detected for 25 years.
B.
possess a variable electric charge.
C.
are usually extremely massive.
D.
record information about their own origin.
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
have been detected for 25 years.
B.
possess a variable electric charge.
C.
are usually extremely massive.
D.
record information about their own origin.
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
At the Threshold of Neutrino Astronomy.
B.
Neutrinos and the History of the Universe.
C.
The Creation and the Study of Neutrinos.
D.
The DUMAND System and How It Works.
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【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
it can provide massive nucleons.
B.
it is like a huge detecting apparatus.
C.
it enables neutrinos to move more actively.
D.
it can keep away the interference of other particles.
【单选题】脉冲星的密度大约：（）
A.
与水的密度相当
B.
与金属的密度相当
C.
与恒星的密度相当
D.
是地球密度的1015倍
【判断题】脉冲星就是中子星
A.
正确
B.
错误
【判断题】脉冲星被称为“太空灯塔 ”。（ ）
A.
正确
B.
错误
【判断题】脉冲星是高速自转的中子星。
A.
正确
B.
错误
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
their ability to escape from different regions of space.
B.
their inability to penetrate dense matter.
C.
the similarity of their structure to that of nucleons.
D.
the infrequency of their interaction with other matter.
【判断题】射电脉冲星是发射周期性射电信号的中子星。
A.
正确
B.
错误
【多选题】脉冲星的特点是（）
A.
体积小
B.
密度大
C.
高速自转的中子星
D.
可发射有周期性的电磁辐射脉冲
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
have been detected for 25 years.
B.
possess a variable electric charge.
C.
are usually extremely massive.
D.
record information about their own origin.
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
have been detected for 25 years.
B.
possess a variable electric charge.
C.
are usually extremely massive.
D.
record information about their own origin.
【单选题】脉冲星的发现者是（）.
A.
查德威克
B.
休伊士
C.
朗道
D.
贝尔
【单选题】Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that perm...
A.
At the Threshold of Neutrino Astronomy.
B.
Neutrinos and the History of the Universe.
C.
The Creation and the Study of Neutrinos.
D.
The DUMAND System and How It Works.
【单选题】脉冲星在哪一年被首次发现？（）
A.
1960
B.
1970
C.
1980
D.
1967
【判断题】脉冲星就是中子星
A.
正确
B.
错误