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问题 解答题

2（3x-2）=（2-3x）（x+1）．

答案

原方程可变形为2（3x-2）+（3x-2）（x+1）=0，

∵（3x一2）（2+x+1）=0，

∴3x-2=0或x+3=0，

∴x1=

2
3
，x2=-3．

单项选择题

Consider a floating rate issue that has a coupon rate that is reset on January 1 of each year. The coupon rate is defined as one-year London Inter-bank Offered Rate (LIBOR) + 125 basis points and the coupons are paid semi-annually. If the one-year LIBOR is 6.5 percent on January 1, which of the following is the semi-annual coupon payment received by the holder of the issue in that year（）

A. 3.250%.

B. 6.500%.

C. 3.875%.
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多选题

在以下的“四连环”图中，每环代表一种物质，相连环间所代表的物质在一定条件下可以发生反应，下表的选项中，符合这一要求的是（　　）

ABCD
甲CuCO2NaOH
乙HClO2COHCl
丙CuOCOFe2O3Fe
丁MgCO2CCuSO4

A．A符合

B．B符合

C．C符合

D．D符合
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