电压型显示仪表的输入信号是（）信号。
A、脉冲
B、电流
C、电压或电流
D、电压或脉冲
参考答案：D
如图所示，质量为2kg的物体静止于水平面上，物体与水平面间的动摩擦因数为0.5，物体受到大小为10N，与水平方向成37°角斜向上的拉力F作用时沿水平面做匀加速运动，求物体4s末速度多大？若4s后将拉力F撤去，再经几秒物体停下？（sin37°=0.6，cos37°=0.8）．
— They will ________ in their car.
— No. They said they wouldn't _____. [ ]
A. give you a lift; take me for a ride
B. lift you; offer me a ride
C. offer you a ride; give me a lift
D. ride you; give me a ride
