题型:问答题 简答题 Lucy wasn’t _____ yesterday. She cut herself.A.enough carefulB.careful enoughC.enough carefullyD.carefully enough 查看答案
题型:问答题 简答题 如图,无穷大匀强磁场垂直线圈所在平面,则下列情况能使线圈里有感应电流的是( )A.线圈垂直纸面向外运动B.线圈垂直磁场上下运动C.线圈垂直磁场左右运动D.线圈绕某一条边匀速转动 查看答案