伍德沃德是( 00a0 00a0)
举一反三
- On00a0July00a0600a02019,00a0which00a0Archaeological00a0Site00a0of00a0China00a0was00a0declared00a0a00a0World00a0Heritage00a0Site00a0by00a0UNESCO?00a000a000a000a0(00a0)
- 化合物A,分子式为00a0C5H11NO2,00a0能被还原为B(C5H13N)。B用过量的00a0CH3I00a0处理后,00a0再用湿00a0Ag2O00a0处理得00a0C(C8H21NO)。C加热分解成三甲胺和2-甲基-1-丁烯。试推测00a0A,00a0 B, C00a0的结构式00a0。00a0(00a0 00a0 )
- 伍德沃德是( )
- 中国人民解放军诞生于( )。 A: 1949/8/1 0:00:00 B: 1949/10/1 0:00:00 C: 1927/8/1 0:00:00 D: 1921/7/1 0:00:00
- 铁路旅客输送日计划按( )编制 A: 0:00~24:00 B: 18:00~18:00 C: 0:00~18:00 D: 0:60~0:18