【简答题】线圈中感应电动势的大小与线圈中磁通大小成正比。( )
【单选题】Don't worry if you don't understand everything. The teacher will the main points at the end of the class. [ ]
【简答题】A.To call Don at the end of the afternoon. B.To give Don's students the next assignment. C.To put the homework on Don's desk. D.To leave the key for Don.
【单选题】某网站在吸纳会员时,要求交纳相应会费,交纳后网站就会给购买者一个会员编号和一个会员“昵称”,该购买者就正式成为网站会员。成为会员后,就可以自由发展下线,收取提成,形成五五复制的上下级关系。这种行为属于( )。
【简答题】What happens in the end? [ A] They don't agree on a decision finally. [B] They will go to the McDonald's. [ C] The man phones the others.
【单选题】线圈中感应电动势的大小与()。
C.
线圈中磁通变化率成正比,还与线圈的匝数成正比;
【单选题】Don’t lose heart; __________ difficulties you are faced with will be overcome in the end.
【单选题】某网站”网站吸纳会员时要求交纳相应会费交纳后网站就会给购买者一个会员编号和一个会员“呢称”,该购买者就正式成为网站会员。成为会员后,就可自由发展下线,收取提成,形成五五复制的上下级关系。这种行为属于______。
【单选题】线圈中感应电动势的大小与()。
A.
线圈中磁通的大小成正比,还与线圈的匝数成正比
B.
线圈中磁通的变化量成正比,还与线圈的匝数成正比
C.
线圈中磁通的变化率成正比,还与线圈的匝数成正比
D.
线圈中磁通的大小成正比,还与线圈的匝数成反比
【单选题】Don't they __________ pay their bill before the end of the month?