如图是氧气分子在不同温度(0℃和100℃)下的速率分布, 是分子数所占的比例.由图线信息可得到的正确结论是( )
A:同一温度下,速率大的氧气分子数所占的比例大
B:温度升高使得每一个氧气分子的速率都增大
C:温度越高,一定速率范围内的氧气分子所占的比例越小
D:温度升高使得速率较小的氧气分子所占的比例变小
Diaoyu Islands __________ China ever since ancient times.
Hello, my name is Tom. I have P.E , art and English on Tuesday(星期二).It is my favourite day. I like English. Look, that is my math teacher. He is very short and kind . His name is Wang Lin. I like beef very much , but I don't like apples . I like bananas , too.
12的倒数的相反数是( )
某阳离子的结构示意图为,则x的数值可能是( )