【单选题】设标有A、B、C、D、E、F、G记号的7盏灯顺次排成一行,每盏灯安装一个开关,现在A、C、E、G4盏灯开着,其余3盏灯是关的,小岗从灯A开始,顺次拉动开关,即从A到G,再顺次拉动开关,即又从A到G,…,他这样拉动了1999次开关后,则开着的灯是( )
【单选题】某班一天上午有4节课,每节都需要安排一名教师去上课,现从A、B、C、D、E、F 6名教师中安排4人分别上一节课,第一节课只能从A、B两人中安排一人,第四节课只能从A、C两人中安排一人,则不同的安排方案共有( )
【多选题】下列文书中属于'计划与方案'范畴的有()
【简答题】请把下面的句子翻译成汉语: Ben Gangmu is recognized as a monumental work in the history of Chinese material medica and a great contribution to the development of pharmacology in the world.
【单选题】________’s monumental masterpiece, Compendium of Meteria Medica , includes 1892 medical substances, 11096 prescriptions, and 1162 illustrations. 835 years earlier than the next pharmacopeias in the wo...
【单选题】Li Shizhen of the Ming Dynasty, whose monumental masterpiece, Compendium of Meteria Medica, includes 1.892 medicinal substances, 11.096 prescriptions,and 1,162 illustrations. _________ years earlier t...
A.
Six hundred and thirty-five
B.
Eight hundred and thirty-five