读下图,完成题。
图中①表示()
A.地幔
B.地壳
C.地核
D.软流层
参考答案:B
解析:
图示①位于地球表层,为莫霍界面以上,故判断为地壳。
阅读理解
This is a boy. His name is Tom. He has a nice cat. It is an English cat. It has black and gray hair. Lucy and Mike are Tom's friends. They have cats, too. Their names are Mimi and Maomao. They are Chinese
cats. They both have white hair. The English cat is five. The Chinese cats are three. They like their cats.
阅读短文,判断正(T)误(F)。
( ) 1. Lucy is Tom's friend.
( ) 2. Tom's cat is Chinese.
( ) 3. The Chinese cats are five.
( ) 4. They like their cats.
( ) 5. Tom's cat is Mimi.
简述YJ19卷烟机进烟鼓轮与拨烟轮的同步位置调整。