潜油电机的定子铁心由()mm厚的硅钢片叠成。
A.0.2
B.0.5
C.1
D.2
参考答案:B
Ask questions with What. (根据答语用What提出问题。)
1. ______________________?
He is taking a shower.
2. ______________________?
She is reading.
3. ______________________?
They are watching TV.
4. ______________________?
The woman is sitting under the tree.
5. ______________________?
My grandparents are eating.
关于湿物料中水分性质的下列讨论,正确的是()
A、湿物料中的自由水一定是非结合水
B、湿物料中的结合水必定是平衡水
C、湿物料中的结合水一定不是自由水
D、湿物料中的平衡水必定是结合水