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热处理钢筋名词解释

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By mentioning the study of IEEE Spectrum, the author intends to______.

A. prove that the danger of using cell-phone on plane does exist
B. advocate that all airlines should provide Wi-Fi service
C. explain how cell-phone may endanger a flight
D. inform. readers of which devices should be allowed to use on plane

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热处理钢筋 名词解释

我国第一部真正意义上针对建设工程安全生产的行政法规是()

杆件变形的基本形式：____、_____、______、_______四种。

简述构件常见的支座形式

By mentioning the study of IEEE Spectrum, the author intends to______.

热处理钢筋名词解释

杆件变形的基本形式：__、_、、___四种。