开采突出煤层时，必须采取哪些综合防突措施？
参考答案：
突出危险性预测、防治突出措施、防治突出措施的效果检验、安全防护措施。
An analyst at a bank concludes that the probability of default for a one-year, single-payment loan is 10.0 percent, and the bank will recover nothing if the loan defaults. The current risk-free rate of return is 3.5 percent. The minimum yieldto-maturity and minimum default risk premium, respectively, that the bank should demand on the loan are closest to:()
A.
B.
C.
膨胀烟丝要求来料烟丝宽度为（）毫米。
