公安机关是人民民主专政的工具，关系着国家安危和社会稳定，只有在党的正确领导下才能正确发挥其职能作用。 ( )
参考答案：对
Billie Blake is interested in a stock that has an expected dividend one year from today of $1.50, i. e. , D1=$1.50, D2=$1.75 and D3=$2.05. She expects to sell the stock for $47.50 at the end of year 3. What is Billie willing to pay one year from today if investors require a 12 percent return on the stock（）
A. $38.01.
B. $41.06.
C. $52.30.
“开关SF6气压低闭锁”属于事故信息。
