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问题
单项选择题
食管静脉曲张是下列哪种疾病的重要并发症()
A.食管癌
B.贲门癌
C.肝癌
D.肝硬化
E.胰腺癌
答案
参考答案:
D
填空题
从下面方框中选择适当的连接词填空。
where whether why who what that
1. _____ will go to the concert is not known.
2. _____ we need is more money.
3. _____ he was late for work is not clear.
4. _____ they will lend me the book doesn't matter much.
5. _____ the man got the money is beinglooked into.
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单项选择题
假定其中的x的单位是角度且不考虑π值的精度,则与数学公式
等价的C++语言表达式是
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