问题
单项选择题
在爆破地点20m以内,有矿车、束清除的煤矸或其他物体堵塞巷道断面()以上时,严禁装药、爆破,
A.l/2
B.1/3
C.2/3
答案
参考答案:B
在爆破地点20m以内,有矿车、束清除的煤矸或其他物体堵塞巷道断面()以上时,严禁装药、爆破,
A.l/2
B.1/3
C.2/3
参考答案:B
阅读理解 |
Today is Sunday. It's fine. There are many people in the park. There are many students. Some are playing football, and many others are watching. There is a lake in the park. Some girls are playing tennis |
1. What day is it today? |
2. Where are the students playing football? |
3. Are the girls playing tennis near the lake? |
4. What are two girls doing under the tree? |
5. What is Wei Hua doing? |