钢水脱氧合金化中，细化脱氧产生的颗粒可以加块脱氧产物的排除速度。
参考答案：错
高频变压器的频率损耗主要是由于（）中的漏电流引起的。
A、副边线圈
B、线圈
C、磁芯
D、散热装置
用所给单词的适当形式填空。
1. My English teacher often wears _____ (glass).
2. I always _____ (meet) John on my way home. I usually stop _____
(have)a walk with him
3. Kate sings very well. She _____ (want) to be a _____ (music).
4. What _____ the singer _____ (look) like?
5. The old tree is 16 meters in _____ ( high).
