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问题 单项选择题

三轴试验时，最小主应力方向和破裂面的夹角为

A.45°+φ/2

B.45°-φ/2

C.45°

答案

参考答案：B

解答题
已知集合A={x|2x2-2x-3＜(
1
2
)3(x-1)}，B={x|log
1
3
(9-x2)＜log
1
3
(1-2x)}，又A∩B={x|x2+ax+b＜0}，求a+b的值．
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单项选择题

Which of the following statements is FALSE All else equal, a floating-rate bond with:（）

A. coupon reset dates every 3 months will have more price fluctuation than a bond with reset dates every 6 months.

B. a fixed-margin rate in the coupon formula will experience greater price fluctuation than a bond with an adjustable margin rate.

C. an interest rate cap will have more price fluctuation than a bond with no interest rate cap.
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