问题
单项选择题
检验检疫机构对实行分类管理企业出口的货物，一类企业抽查批次不大于申请报检总批次的( )，二类企业抽查批次不大于申请报检总批次的50%，三类企业实行批批查验。
A．5%
B．10%
C．20%
D．30%
答案
参考答案：D
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检验检疫机构对实行分类管理企业出口的货物，一类企业抽查批次不大于申请报检总批次的( )，二类企业抽查批次不大于申请报检总批次的50%，三类企业实行批批查验。
A．5%
B．10%
C．20%
D．30%
参考答案：D
I stood there listening to my father shout at top of his voice. The on his face said that one of us had done something wrong. “ one of you did this?” We all the step. There was a child’s handwriting in chalk there. I was very . I hoped no one could see it. Would he guess it was me? I was so afraid. When he asked me, I lied, “Not me, Dad.” The others denied (否认) it as well. Of course, we all knew that one of us must have done it. But as the youngest and smallest of the three, I just couldn’t find the to tell the truth. To find out who had written on the step, Father gave us each a piece of paper and a pencil. “I want each of you to write exactly what you see on the step.” I tried my best to write the words . I didn’t want Dad to be able to tell it was me. He gathered up our pieces of paper and looked at them. “ none of you will admit(承认) to have done it, then I will punish you all.” I stood there and said . The last thing I wanted was for Dad to punish me! “I did it.” My sister stepped forward and said she had done something she hadn’t. She was grounded for a month. We didn’t that day for many years. Not until we were all older and I knew it was safe to finally tell my dad it was really me. I always felt sorry because of it. That was the time I let anyone take the blame for me.
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，其最高价氧化物水化物的分子中有m个氧原子，则其最高氧化物水化物的化学式（ ）
