问题
多项选择题
粉尘分散度对煤矿工人尘肺病的发生和发展有重要影响，因此必须重视粉尘的分散度测定。我国与煤矿粉尘有关的现行标准中。有三项标准规定了粉尘分散度的测量方法，它们分别是（）。
A.gB5748—1985
B.MT79—1984
C.MT75—1992
D.MT422—1996
E.MT355—1987
答案
参考答案：A, B, D
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粉尘分散度对煤矿工人尘肺病的发生和发展有重要影响，因此必须重视粉尘的分散度测定。我国与煤矿粉尘有关的现行标准中。有三项标准规定了粉尘分散度的测量方法，它们分别是（）。
A.gB5748—1985
B.MT79—1984
C.MT75—1992
D.MT422—1996
E.MT355—1987
参考答案：A, B, D
A nurse took a tired soldier to an old man , “Your son is here ,” she told the old man. The old man could hardly 1 the young soldier clearly. He reached out his 2 .The soldier held the old man’s hand. The nurse brought a chair so that he could sit 3 the bed. All through the night, the young soldier sat there 4 the old man’s hand. Now and then he heard him say a few words. The dying man said 5 . He only held his son’s hand tightly all through the night. The next morning, the old man died. The soldier freed his hand and went to 6 the nurse .While the nurse did 7 she had to do, he waited. Then he asked her, “Who was that man?” The nurse was 8“Wasn’t he your father?” she said. “No, he wasn’t”, the soldier answered.” I 9 saw him before.” “Then 10 didn’t you say anything when I took you to 11 ?” “I knew right away there had been a 12 , and I also knew he needed his son ,_13 his son just wasn’t here. When I found that he was too 14 to tell whether or not I was his son, I knew 15 he needed me, I stayed.
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