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【简答题】
DDN的组成部分有哪些?
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“高脚柜”炸弹
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石井式陶瓷细菌弹
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Mk-116 型化学航空炸弹
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Mk-15 型氢弹
【单选题】I'm ______ of country music. I often listen to its CDs. [     ]
A.
fond
B.
tired
C.
afraid
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interested
【单选题】下面哪一种不属于航空器?
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无人机
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identifying field
B.
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【单选题】下面哪一种不属于航空器?
A.
无人机
B.
火箭
C.
飞机
D.
战斗机
【单选题】Identify the sentence that uses adverbs correctly.
A.
Despite years of lessons, Wesley plays the piano badly.
B.
Despite years of lessons, Wesley plays the piano bad.
C.
Despite years of lessons, Wesley plays the piano worse.
D.
Despite years of lessons, Wesley plays the piano badder.
【简答题】有人在测一个二极管反向电阻时,为了 使万用表测试和管脚接触良好,他用两手 把两端接触处捏紧,结果发现管子的反向 电阻比较小,认为不合格,但用在电子设 备上却工作正常。这是什么原因?
【单选题】知识点:弹簧振子的振幅和周期
A.
B.
C.
D.
D
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