A.Study for some profession.B.Attend a medical school. C.Stay in busines
A. Study for some profession.
B. Attend a medical school.
C. Stay in business.
D. Sell his shop.
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如图9-2所示,已知 vA=ω1·O1A,方向如图;vD垂直于O2D。于是可确定速度瞬心C的位置,求得:
这样做对吗?为什么?
金融期货的限仓制度是交易所为了防止市场风险过度集中和防范操纵市场的行为,而对交易者持仓数量加以限制的制度。()