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采用哪些措施可以提高传感器的技术性能?

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椭圆的长轴长是短轴长的4倍,则椭圆的离心率为()

Complete the sentences with the words or from the follwoing words and phrase. Change the form if necessary.trend ;positive; decade; available;attributable;guarantee; expand ;identification; career; statistics; assessment ;relate to1.She decides to make teaching her _______ because she loves it.

The company has __________ its operations in Wuhan by building a new factory there.

The cost __________ the amount of time spent on the job.

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