单项选择题
the relationship between language, thought and culture ...
判断题the relationship between language, thought and culture seen as three parts of a whole. None of them can operate independently.
本实验中使用的Pt小球能够催化过氧化氢生成氧气。( )A.对 B.错
单项选择题本实验中使用的Pt小球能够催化过氧化氢生成氧气。( )
下图是( )干燥设备原理示意图。 A、流化床 B、喷雾 C、冷冻干燥 D、气流
单项选择题下图是( )干燥设备原理示意图。 A、流化床 B、喷雾 C、冷冻干燥 D、气流