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【简答题】
高功率（）武器又称射频武器，是利用高功率微波发射机和高增益定向天线发射高强度、能量集中、具有方向特征的微波射毁坏敌方电子设备的一种定向能武器。
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反馈参考答案：
举一反三
【多选题】What are the factors that may cause reluctance for the learners to speak?
A.
Plenty of time.
B.
Low proficiency in English.
C.
Psychological / affective factors.
D.
Learners’ prior learning experiences and the expectations created by these experiences.
【单选题】Which of the following factors may NOT be the cause of Nathan Rothschilds death?
A.
Failure to get timely treatment.
B.
A fatal wound on his back.
C.
Bacterial infection.
D.
Lack of good medicine and operation technique.
【简答题】What are the factors that cause young Americans devaluate hard work? ______.
【单选题】患者，女性，68岁。有慢性咳嗽、咳痰史30年，近3年来出现进行性呼吸困难加重，伴发绀，双下肢水肿，应考虑为
A.
肺气肿
B.
呼吸衰竭
C.
全心衰竭
D.
右心衰竭
E.
左心衰竭
【单选题】The two major factors that cause changes in meaning are ______.
A.
historical reason and class reason
B.
historical reason and psychological reason
C.
class reason and psychological reason
D.
extra-linguistic factors and linguistic factors
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