When a vessel navigates in an area with a small underkeel clearance but with adequate space to take avoiding action she ().
A. Should not be regarded as a vessel constrained by her draught
B. Should be regarded as a vessel constrained by her draught
C. Shall be regarded as a vessel restricted in her ability to maneuver
D. Should be regarded as a non-displacement vessel
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按舵的支承分类有______。
A. 多支承舵
B. 双支承
C. 半悬挂舵和悬挂舵
D. A+B+C
压水堆蒸汽管道断裂事故后短时间内产生的蒸汽将通过断裂的蒸汽管而漏出,其湿度因()而()于正常值。
A. 增压高
B. 增压低
C. 泄压高
D. 泄压低
17日,首届上合组织国家电影节在青岛闭幕。闭幕式上颁发了(),其中最佳影片的桂冠由中国影片《进京城》和()影片《米娜向前走》摘得。
A. “金海鸥奖”阿富汗
B. “金海鸥奖”伊朗
C. “金鸥奖”阿富汗
D. “金鸥奖”伊朗