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问题
单项选择题
车间汽油的抗爆性用（）表示。
A.十六烷值
B.辛烷值
C.晶度值
答案
参考答案：B
选择题
Peter doesn't tell me when he ______. I'll telephone you as soon as he ______.
A. will come, comes
B. will come, will come
C. comes, will come
D. comes, comes
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问答题 简答题
什么叫绩效综合指数?
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