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【判断题】
同一原子产生的KαX射线的强度大于KβX射线的强度。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】单位冲激响应 h (t) 是系统在 δ(t) 激励下产生的零状态响应,为什么又说它与输入无关?
【简答题】Albert Einstein, the greatest scientist in the 20th century, once __________ an offer of $1,000 a minute to speak on the radio. A． turned down B. turned up C. turned out D. turned in
【单选题】Albert Einstein, the greatest scientist in the 20th century, once______an offer of $1,000 a minute to speak on the radio.
A.
turned down
B.
turned up
C.
turned out
D.
turned in
【简答题】There is little likelihood of the goods remaining unsold once this particular offer has lapsed.(英译中)
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