瓦斯监测探头应（）悬挂在距顶板、顶梁不得大于（）毫米，距巷道侧壁不小于（）毫米。
参考答案：垂直、300、200
一个区间有多处道口时，至少应有（）处道口电话接通车站。
A.1
B.2
C.3
D.4
Which of the following statements regarding the issuance of a discount bond is TRUE（）
A. The cash from operations (CFO) is understated.
B. The cash from investing (CFI) is increased by the amount of the proceeds.
C. The cash from financing (CFF) is increased by the amount of the proceeds.
