In the futures market, leverage______.
A. refers to investors' having control over large cash amounts of commodities with comparatively small levels of capital
B. means a small change in a futures price can translate into a huge gain or loss
C. likes a double-edged sword
D. both A and B
E. A.B and C
根据规定,发票丢失,应于法定期限内书面报告主管税务机关,并在报刊和电视等传播媒介上公告声明作废。该法定期限是()。
A. 丢失当日
B. 3日内
C. 5日内
D. 10日内
上市公司在履行信息披露义务时,应指派董事会秘书、证券事务代表或者代行董事会秘书职责的人员负责与交易所联系,办理信息披露与股权管理事务。
A. 正确
B. 错误