In the fusion reaction of elements formed in the universe, carbon nuclei can be directly generated from helium nuclei. A: 正确 B: 错误

In chemical reactions, all electrons rearrange around the nuclei.

The pyramid is formed by A: pyramidal tract B: medial lemniscus C: cranial nerve nuclei D: non-cranial nerve nuclei E: inferior olivary nucleus

Two electrons(电子) will be repelled from each other and so will two nuclei(原子核).

Only in recent years have tools been available for investigating nuclei in any detail.

If a cellular homogenate were subjected to differential centrifugation, Nuclei would be expected to pellet first

TB<br/>cannot be transmitted by ( ) A: droplet<br/>infection B: ingestion<br/>of infected milk C: droplet<br/>nuclei D: fomites

Atoms having the same atomic number Z, but different numbers of neutrons N are called of the element A: nuclei B: isotopes C: units D: masses

Following glands are purely endocrine glands, except () A: the pineal gland B: neurosecretory and hypothalamic nuclei of the brain C: testes D: thyroid and parathyroid glands

For aluminum ( Z2 = 13) and gold ( Z2 = 79 )targets, what is the ratio of α particle scattering at any angle for equal numbers of scattering nuclei per unit area? (     )