线路传输的三种方式:()。
参考答案:非平衡、平衡与、差分
社会生活既丰富多彩,又纷繁复杂,下列应该提倡的行为是[ ]
A、中学女生杨利娟崇拜歌星刘德华,把追星当作生活的全部
B、初一男生小李故意损坏教学楼楼道开关
C、在地震时,趁乱抢钱
D、同学们响应校团委号召,积极为灾区捐款捐物
()for many years,the AB passed the examination and became an officer.
A.Having ignored him
B.To have been ignored
C.To be ignored
D.Having been ignored