在设计注塑模各成型零件公积尺寸的公差时，除了附加收缩量外，设计者还必须给出（）.
A.材料热处理硬度
B.表面粗糙度
C.脱模斜度
参考答案：B
句型转换.
1. Kate loves the belt. (对划线部分提问)
_____ does Kate _____ the belt?
2. I have a wallet and sunglasses. (改为否定句)
I _____ have a wallet _____ sunglasses.
3. What do you think of China? (改为同义句)
_____ do you _____ China?
4. How was Sports World? (改为同义句)
_____ _____ Sports World?
5. He doesn't like game shows. He doesn't like talk shows, either. (改为同义句)
He _____ game shows _____ talk shows.
下列各部件中，（）是闸阀的主体，是安装阀盖、连接管道的重要零件。
A.阀体
B.阀杆
C.传动装置
D.闸板
