________ 's pioneering work in hybrid rice breeding and production techniques has revolutionised rice cultivation in China and established China's world leading position in hybrid rice research.
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On 16 October 1964, China exploded the first nuclear bomb in Lop Nor of Xinjiang, becoming the third country with atomic weapon capability after the United States, the former Soviet Union.
A. 对
B. 错
In 1958, China built its first heavy water reactor and cyclotron, heralding China's entry into the atomic age.
A. 对
B. 错
In August 1983, a revolutionary five-stroke code computer input method solved the problem of entering Chinese characters into computers. Thus, Chinese characters entered the information age.
A. 对
B. 错
FMCS导航数据库的更新间隔为( )天。
A. 15
B. 28
C. 30
D. 60