缩聚
参考答案:
由分化过程产生的低聚合物不是一成不变的,它可以相互发生作用,形成级次较高的聚合物,同时释放出部分Na2O。这过程成为缩聚。
根据《信托法》,受托人因处理信托事务所支出的费用、对第三人所负债务,以 ( )承担。
A.信托财产
B.受托人固有财产
C.委托人固有财产
D.委托人固有资产和信托财产
用括号里的词的正确形式填空。
1. My grandpa is going to have her (90) birthday.
2. We are looking for a student (call)Tom.
3. While we (wait) for the bus , a girl (run) up to us.
4. - you ever (be) to Beijing?
-Yes, I (go) there last year.
5. We have problems (work) out the maths problem?