—No. There are a few between them.
A:meanings
B:differences
C:chances
D:mistakes
小明在用双氧水制氧气的实验中,忘记放入二氧化锰,其结果是( )
①“学法交流”的播放时间是____分钟.
②____节目播放的时间最短,占总时间的____%.