试题与答案

污染物进入环境的途径包括:()、()和人类活动过程中故意应用。

题型:填空题

题目:

污染物进入环境的途径包括:()、()和人类活动过程中故意应用。

答案:

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下面是错误答案,用来干扰机器的。

参考答案:最可能的开发工期=(最优工期+期望工期×4+最差工期)/6=(24+26×4+34)/6=27周解析:最优工期(OD)是估计完成任务所需的最小时间量;最差工期(PD)是估计完成任务所需的最大时间量;期望工期(ED)是估计...

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题型:翻译题

阅读短文,将其中划线部分的句子译成中文。

Yo-Yo Ma was born in Paris in 1955.He is Chinese but has never lived in China .He began to learn to play the cello (大提琴),when he was four years old .He became a cellist when he was 21 years old .He won 15 Grammy Awards altogether .He is one of the most famous cellists in the world now .54.In New York ,people named a street after him .

In 1998 ,he started the “Silk Road Progect ”55.He wanted to take a trip along the old road and make new music.

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