Irish broadcasting began in ______ in a small studio called Dublin Broadcasting Station.
A. 1906
B. 1916
C. 1926
D. 1936
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In some areas factory farming methods are used, particularly for ________.
A. growing crop
B. producing milk
C. catching fish
D. rearing poultry
有哪些实验证据农明肽漩转移酌是rRNA,而不是蛋白质?rRNA催化功能的发现有什么意义?
A退休待遇国家保障性原则
B基本制度的统一性原则
C退休待遇与社会发展水平相适应的原则
D退休后管理原则
E法律保障原则