采准的工作比重
参考答案：
采准切割巷道的采出矿量Tˊ与T矿块采出的矿石总量之比。
There is no possibility ________ he will keep his word．He is always telling lies.
A．how
B．whether
C．when
D．that
用3dsmax建立三维模型有两种基本方式是什么？
