【简答题】Consumers have the right (obtain) [填空] true information of the services they receive from the sellersA. to obtain
【单选题】爱迪生对发明的方法进行了创新,那就是( )
【简答题】已知电路如图所示,其中 R1=R2=1Ω , R3=R4=2Ω , R5=4Ω ,则等效电阻 Rab 为( ) Ω
【简答题】一年级组织学生去看话剧,学生去了52人,教师去了8人,学生比教师多去多少人?
【简答题】There is no goal that you cannot obtain so long as you have an honest attitude and a strong will.