矿井涌水量的预测方法主要有坑道系数的水动力学法(大井法)、水文地质比拟法等。
参考答案:对
-Have you been wasting time on computer games again?
-_________. I've been studying a lot and I need a break. [ ]
A.No way
B.Not really
C. I don't agree
D.I couldn't agree more
两个小队的同学做纸花,8人做了72朵.照这样计算,再增加10个人,一共可以做多少纸花?