问题
单项选择题
《煤矿井巷工程质量检验评定标准》规定，主要巷道采用混凝土支护，其净高（腰线至顶、底距离）偏差（）时为优良。
A.0～+25mm
B.0～+30mm
C.0～+10mm
D.0～+35mm
答案
参考答案：B
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《煤矿井巷工程质量检验评定标准》规定，主要巷道采用混凝土支护，其净高（腰线至顶、底距离）偏差（）时为优良。
A.0～+25mm
B.0～+30mm
C.0～+10mm
D.0～+35mm
参考答案：B
| 完型填空。 | ||||
| John,11 years old, was in bed in hospital. Several days before, while he was 1 in a baseball game, he fell and hit his head. The doctors believed that he might 2 get well. "He seems to have given up hope. So medicines alone won't 3 . Perhaps he needs something else," said a doctor. "When I visit him, all he ever says is that he would like to meet Babe Ruth." To meet Babe Ruth, of course, was not 4 . In America, Babe Ruth was as 5 a man as the President himself, and he was the most famous baseball player. The next day John's father managed to tell Babe Ruth about the story of his son on the phone. Twenty-four hours later, as the boy 6 in his hospital room, in walked 7 . Young John could hardly believe his own eyes! The great baseball player sat down at Jobn's bedside, sang, "Now, listen, kid, you've got to get well. I've brought you a new American League baseball, 8 you must start throwing it." For John this was the beginning of a new life. 9 his doctors' surprise, the boy walked out of the hospital on his own a few weeks later. How was able to live a healthy life-all because of the 10 of Babe Ruth. | ||||
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