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软木板的表观密度为250～250kg/m及某些重要工程。()

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When used with reversing reduction gears, medium-speed diesel engines should be bolted to

A. maintain alignment when the ship’s hull is working in heavy seas
B. ensure engine vibrations correspond to the natural frequency of the hull
C. permit the engine to expand away from the driven equipment as the engine heats up and expands
D. maintain engine thrust bearing clearances

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软木板的表观密度为250～250kg/m及某些重要工程。()

When used with reversing reduction gears, medium-speed diesel engines should be bolted to

资本充足程度直接决定银行的最终清偿能力和抵御各类风险的能力。（）

教师的课堂姿态主要包括身姿、手势和表情三个方面，教师的课堂姿态要()、大方、优雅。

非现场监管和现场检查是银行业监督管理机构的法定职责。（）