试题与答案

哈达玛变换

题型:名词解释

题目:

哈达玛变换

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析: 题干中紫竹和植物学家是研究对象和研究者的关系。D项蝴蝶是昆虫学家的研究对象;其他三项都不符合这种关系。因此选择D。

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题型:听力题

One afternoon on April, 1912, a new ship set off from England to America on it first trip. It was one of the largest and best ship at that time. It was cold, but the ship was pleasant and people are enjoying themselves. The next day was even cold. People who could see icebergs here or there. It was night. Suddenly, the man on watch shouting “Look out! Iceberg!” It was too late. A ship hit the iceberg and came to a stop. There was a very big hole in the ship and water began to come. Slowly the ship started to go down.

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