货品编码是物流中心在进货后,根据自己物流作业管理信息系统的要求,将商品代号及物流条码统一起来的一种方式。 ( )
参考答案:对
单词拼写。
1. There will be more and more _______(图书馆) for us to read books.
2. Mr Green is a doctor. He works in a h_______.
3. Tigers and lions are d_______ animals.
4. I went to Shanghai and _______(喜欢) in love with it.
5. He can do his homework by _______(自己)
6. We go to school every day e_______ Sunday.
7. Joining the English club is the best way to _______(提高) our speaking skills.
8. I used to be a_______ of being alone when I was very young.
9. October _______(十二) is my friend's birthday.
利用下图所示的有机物X可生产S-诱抗素Y(部分产物未写出)。下列说法不正确的( )
A.X、Y结构中都有手性碳原子
B.X分子中所有碳原子都在同一平面
C.Y可以发生取代、酯化、加成反应
D.1mo]Y最多消耗2mol NaOH