函数的间断点为().
参考答案:x=4
质量相等的甲乙两球在光滑水平面上沿同一直线运动。甲以7 kg·m/s的动量追上前方以5 kg·m/s的动量同向运动的乙球发生正碰,则碰后甲乙两球动量不可能的是
A.6.5 kg·m/s, 5.5 kg·m/s
B.6 kg·m/s, 6 kg·m/s
C.4 kg·m/s, 8 kg·m/s
D.5.5 kg·m/s, 6.5 kg·m/s
Can you imagine ! He offered me $ 5,000 to break my contract. That's ______. Of course I didn't agree. I would take legal action.
A.fraud
B.blackmail
C.bribery
D.compensation