在外电场作用下,液体介质作定向移动的现象称为

A、电介质中会出现有序排列的电偶极子

B、电介质内部的带电粒子发生定向移动

C、电介质表面和内部出现束缚电荷

D、电介质中电场不发生变化

A. 有关

B. 无关

C. 函数关系

D. 非线性关系

A、磁介质中原子磁矩会转向和外磁场方向相反排列

B、磁介质中原子磁矩会转向和外磁场方向一致排列

C、磁介质中磁感应强度会增强

D、磁介质中磁感应强度不变

A、磁介质中原子磁矩会转向和外磁场方向相反排列

B、磁介质中原子磁矩会转向和外磁场方向一致排列

C、磁介质中磁感应强度会增强

D、磁介质中磁感应强度不变

A. 偏析

B. 氧化

C. 腐蚀

You want to borrow a book from your classmate, Kate. Leave her a note which contains the nYou want to borrow a book from your classmate, Kate. Leave her a note which contains the name of the book in need, the time you hope to keep the book, as well as your gratitude. You should write about 100 words on ANSWER SHEET 2. Do not sign your own name at the end of the letter. Use ’Li Ming’ instead.