A:牛顿
B:欧姆
C:安培
D:奥斯特
如图,反比例函数y1=k1x和正比例函数y2=k2x的图象交于A(﹣1,﹣3)、B(1,3)两点,若y1>y2,则x的取值范围是( )
已知a→=1,2,b→=x,1且a→+2b→∥2a→-b→,则x为 ( )
用“who”或“that”填空(1) The man____ is talking with my mother is my father .(2) That book is the one____ I bought yesterday .(3) He is one of the workers ____ been saved in that accident .(4) They talked of the things and persons ____ they remembered in the factory .(5) All____ can be done must be done .