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【判断题】
空蚀对金属材料表面的侵蚀破坏有机械作用、化学作用和电化作用三种，以机械作用为主。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】 l____ vi. 倾斜,倚,靠
【单选题】What is the story mainly about?
A.
How Bryant’s helicopter crashed.
B.
What Bryant’s fans did in memory of him.
C.
Why Bryant chose to be a basketball player.
D.
Why so many people felt sad about Bryant’s death.
【简答题】R、L、C串联电路中，电路发生谐振，则总阻抗等于（）。
【单选题】What is the best title of the passage?
A.
. Are You Really Lack of Time?
B.
. How Can You Work Efficiently?
C.
. What Makes Your Energy Limited?
D.
. When Should You Do Exercise?
【单选题】What is the main idea of the passage?
A.
How to deal with stress.
B.
Useful measures to deal with stress.
C.
What to do in the face of stress.
D.
Type A and Type B personalities.
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