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问题
单项选择题
烧结过程中含水量最大的是()。
A.燃烧层
B.烧结矿层
C.过湿层
答案
参考答案:
C
选择题
It is known to all that _____ you exercise regularly, you won't keep good health.
A. unless
B. whenever
C. although
D. if
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名词解释
共和制
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