露天深孔台阶爆破药量计算公式为（）。
A、Q=K′W3
B、Q=qabH
C、Q=K′W2L
参考答案：C
浆纱回潮率
By ______ computation, he estimated that the repairs on the house would cost him $2,000.
A. coarse B. rude C. crude D. rough
