功率、扭矩和燃油消耗率随曲轴转速变化的规律称为发动机的()。
参考答案:速度特性
. __________ you must do is to choose a scene __________ will best show your acting talent.
A.That; that
B.What; that
C.That; where
D.What; where
股票期货最早出现于美国。 ( )