由大小相等、方向相反,作用线互相平行,而不共线的两个平行力称为力矩。
参考答案:对
——The price is fine with me. How would you like it to be paid?
——Just cash, please.
A.by
B.in
C.with
D.through
阴中有物突出,经久不收,局部红肿溃烂,黄水淋沥,心烦口苦,小便黄赤。选方()
A.补中益气汤
B.大补元煎
C.肾气丸
D.龙胆泻肝汤
E.归脾汤