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【判断题】
渔业资源的过度捕捞、森林砍伐、野生动植物的滥捕滥采等一些过度开发利用生物资源的行为,已经成为生物多样性急剧锐减的原因。A.
正确
B.
错误
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【简答题】变频器的基本通电操作如下:1、熟悉_______________,2、进行_____________, 3 、进行________________,4、逐项____________,5、测量________.
【简答题】光在玻璃中的传播速度是真空中光速的______．
【简答题】变频器的基本通电操作如下:1、熟悉_______________,2、进行简单操作,3、 进行功能设定,4、逐项____________,5、测量电压.
【单选题】听力原文：W: Mr. Long, can you transfer me to another department? M: Why? Getting tired of your job? W: Actually, I'm getting tired of Nora Hunter. M: You mean 'noisy' Nora? W: How do you know about her? M...
A.
In a restaurant.
B.
At an office.
C.
At home.
D.
In a supermarket.
【单选题】听力原文：W: Mr. Long, can you transfer me to another department? M: Why? Getting tired of your job? W: Actually, I'm getting tired of Nora Hunter. M: You mean 'noisy' Nora? W: How do you know about her? M...
A.
In a restaurant.
B.
At an office.
C.
At home.
D.
In a supermarket.
【单选题】听力原文：W: How are you getting on with your experiment? M: In spite of my continuous failure, I have already made some progress. What can we learn about the man's enperiment ?
A.
It is going on well.
B.
It has failed several times.
C.
It will soon be finished.
D.
It may have to be stopped.
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