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三相星形接线的电源或负载的线电压是相电压的 倍, 线电流与相电流相等。
A、根3
B、根2
C、1
D、2
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荧光最大发射波长会随着激发波长的改变而改变。( )
正确
错误
答案:
错误
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FE:
Sentence Combining
Combine the sentences in each set into a single clear sentence. Add the phrase/ words in the blank to make the sentence complete. Don't leave out any important details.
9. My advice is this.You practice speaking English.You should do as often as possible.
My advice _______ you practice speaking English as often as possible.
(1)
答案:
填空(1): is that 。
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