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哥特建筑艺术

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A Master would be well advised to file a note of protest if().

A. Portions of his vessel's cargo were illegally impounded
B. Longshore labor went on strike in a port causing undue vessel delay
Cargo was received at ship side which was damaged in land transit
D. The vessel encountered heavy weather which might have caused bottom damage

防止虫害的方法主要有化学杀虫法、()杀虫法和()杀虫法。

SPM的效果与输入信号的光强成正比,与光纤衰减系数及有效纤芯面积成反比。()

A. 正确
B. 错误

直流发电系统大都用于()千瓦以下的微、小型风力发电装置,与()配合使用。

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