问题
多项选择题
废弃矿井闭坑前，应当采用（）等方法，探测矿井边界防隔水煤（岩）柱破坏状况及其可能的透水地段，采用注浆堵水工程隔断废弃矿井与相邻生产矿井的水力联系，避免矿井发生水害事故。
A.物探
B.化探
C.钻探
D.巷探
答案
参考答案：A, B, C
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废弃矿井闭坑前，应当采用（）等方法，探测矿井边界防隔水煤（岩）柱破坏状况及其可能的透水地段，采用注浆堵水工程隔断废弃矿井与相邻生产矿井的水力联系，避免矿井发生水害事故。
A.物探
B.化探
C.钻探
D.巷探
参考答案：A, B, C
Travis laughed as he tore at the wrapping paper on his birthday present. He was so ! Finally, he would have the coolest pair of name-brand basketball shoes. All the guys on his team were wearing the name-brand shoes of a popular basketball , Chuck Hart. Hart was criticized for his poor sportsmanship and infamous , he was a great player. In fact, Travis wasn't thinking about Hart' s behavior; he had only expected to see Hart’s on the side of the box. The first indication that something was came as he tore away the last piece of paper. Not Hart’s. The new shoes were the name-brand of another player, Robert Ryann, who was for his amazing work in the community. Travis’s hands ; his heart stopped. It wasn't that the Ryann shoes weren’t nice, but what would his friends think ? They were the wrong shoes and Travis would be by the other players. When he looked up into his dad' s eyes, however, Travis decided he not tell him. "'Thanks, Dad. I was really hoping for shoes," Travis said as he pulled the shoes out of the box. Next morning his dad drove him to school. When they in front of his destination, Travis slowly opened the car door. Just then, his dad stopped him. “Hey, Travis, wait a minute, look…” his dad said ,“Travis, I know those aren’t the shoes you had hoped for, but I saw the names of the two guys and made a（n） . The guy whose name is on those shoes,” he said, pointing down at Travis’s feet, “is someone I . Do you know how often Ryann has found himself in ?” “No,” Travis said. “Never. He’s never talked back to his coach or started a fight, and he’s a team player. You could have acted like a (n) when you didn’t get the shoes you wanted, Travis, you were polite and made the best of it. You have such a good , like the guy whose name is on these shoes. I’m hoping that someday, your name will be on the coolest pair of shoes I’ll ever see.” When Travis looked down at his feet, he saw the shoes . His dad had used his mind and heart to give the son a thoughtful .
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