X-rays are also called Rontgen rays _____ the discoverer who first put them to use.
A: in case of
B: in view of
C: in place of
D: in honor of
A: in case of
B: in view of
C: in place of
D: in honor of
举一反三
- 以下属于直接电离辐射的是（） A: X-rays B: γ-rays C: β-rays D: neutrons
- X-rays and gamma rays can be used to detect and treat cancer ______.
- In the secondary structure of roots, xylem rays and phloem rays belong to ( ). A: Secondary rays B: Vascular rays C: Pith rays
- The invisible rays of the()beyond the violet end are called the ultraviolet rays. A: speculation B: spectrum C: sleet D: range
- 1，On the day of first frost,the Sun's rays reach an angle of_______ degrees to the earth. A: 210 B: 220 C: 200 D: 230