问题
单项选择题
矿山安全技术
多用于井巷工程的爆破方法是( )。
A．浅孔爆破
B．深孔爆破
C．中孔爆破
D．中深孔爆破
答案
参考答案：A
解析：根据炮眼深度与直径的不同，我国煤矿将钻眼爆破法分为浅孔爆破法、中深孔爆破法和深孔爆破法。炮眼宜径小于50mm、深度小于2m时称为浅孔爆破，多用于井巷工程。
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矿山安全技术
多用于井巷工程的爆破方法是( )。
A．浅孔爆破
B．深孔爆破
C．中孔爆破
D．中深孔爆破
参考答案：A
解析：根据炮眼深度与直径的不同，我国煤矿将钻眼爆破法分为浅孔爆破法、中深孔爆破法和深孔爆破法。炮眼宜径小于50mm、深度小于2m时称为浅孔爆破，多用于井巷工程。
| 根据短文内容，选择可以填人空白处的最佳答案。 |
| English names and Chinese names are very different in 1 some ways. But it's not hard for us to know. It is not like Chinese, most English people have 2 names. One is their family name, usually it is the 3 family name, both of the other names are given names (取的名字). Their family name is 4 the given names. They use Mr, Mrs or Miss with the 5 name, but they never use 6 with the given names. For example, we can 7 a man named James Allan Green Mr Green. 8 we can't call him Mr James or Mr Allan. People usually use Jim instead of (代替) James. Jim is short for ( ......的缩写) James because it's 9 to remember. But Chinese names are the opposite (相反的). A girl with the name Han Limei 10 her family name Han first. |
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