题目内容

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

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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
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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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A. 5
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D. 3

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