A:位于磁场中的闭合线圈,一定能产生感应电流
B:闭合线圈与磁场发生相对运动,一定能产生感应电流
C:闭合线圈做切割磁感线运动,一定能产生感应电流
D:穿过闭合线圈的磁通量变化越快,产生的感应电动势一定越大
--What do you think of Lady Gaga? --Maybe she is one of ________ singers in the world.
______ 2000,this company has seen much new development.It has become one of the biggest companies in the country.
—Shall we have a smoke here?
—No, we _____ because this is gas station and the worker is carrying some petrol.
现有盐酸和CaCl2的混合溶液,向其中逐滴加入过量的某物质X,溶液的pH随滴入X的量的变化关系如图所示,则X可能是( )
《“十三五”脱贫攻坚规划》明确指出,要坚持精准扶贫、精准脱贫基本方略。这体现了社会主义的最终目标是( )