题型：名词解释 为了测定一根轻弹簧压缩至最短时能储存的弹性势能的大小，可以将弹簧固定在一带有凹槽的轨道的一端，并将轨道固定在水平桌面边缘上，如图所示，用钢球将弹簧压缩至最短，而后突然释放，钢球将沿轨道飞出桌面，实验时：（1）需要测定的物理量是_________________ （2）计算弹簧最短时弹性势能的关系式是Ep=___________________ 查看答案
题型：名词解释 完善文化管理体制，按照（）原则，推动政府部门由办文化向管文化转变，推动党政部门与其所属的文化企事业单位进一步理顺关系。A.政企分开、政事分开B.政企协调、政事统一C.政企分开、政事统一D.政企协调、政事分开 查看答案
题型：名词解释 It is April 15, and a trader is entered into a short position in two soybean meal futures contracts. The contracts expire on August 15, and call for the delivery of 100 tons of soybean meal each. Further, because this is a futures position, it requires the posting of a $3000 initial margin and a $1500 maintenance margin per contract. For simplicity, however, assume that the account is marked to market on a monthly basis. Assume the following represent the contract delivery prices (in dollars per ton) that prevail on each settlement date:April 15 (initiation)May 15June 15July 15August 15 (delivery)173.00179.75189.00182.50174.25What is the equity value of the margin account on the May 15 settlement date, including any additional equity that is required to meet a margin callA．A. $4650. B．B. $2300. C．C. $2700. 查看答案
