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偏离泡核沸腾departure from nucleate boiling


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考题 A vessel proceeding to London,England,from New York makes an unscheduled call at the port of Hamilton,Bermuda.What term is used to denote the voluntary departure from the usual course?A.AlterationB.DeviationC.LibertyD.Unscheduled stop

考题 对于工况II事件,通常应用的验收准则为最小偏离泡核沸腾比(DNBR)在双()%偏离泡核沸腾准则规定的限值以()。A、90上B、90下C、95上D、95下

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考题 液体沸腾的相变传热时,关于给热系数以下说法对的是()。A、泡核沸腾的h大;B、强烈泡核沸腾的h大;C、膜状沸腾的h;D、三种状态的h一样大。

考题 管内液体的沸腾状态可分为()。A、沸腾区;B、预热区;C、鼓泡区;D、饱和蒸气区。

考题 Get ready the mooring machinery, mooring lines and the gangway for ().A、loading cargoB、arrival in portC、departure from portD、unloading cargo

考题 核态沸腾

考题 以下哪种沸腾状态不属于大空间沸腾换热的沸腾状态?()A、过冷沸腾B、自然对流沸腾C、模态沸腾D、泡态沸腾

考题 什么是DNB(即偏离泡核沸腾)?

考题 如果热流密度不高,不会达到偏离泡核沸腾工况,试问随着含汽量的升高,相继会出现什么传热工况?

考题 泡核沸腾 nucleate boiling

考题 沸腾传热时,下列哪一种情况传热膜系数(给热系数)最大?()A、泡核沸腾B、膜状沸腾C、强烈泡核沸腾D、液体沸腾

考题 工业生产中,沸腾传热操作应设法保持在()。 A、自然对流区B、泡核沸腾区C、膜状沸腾区D、过渡区

考题 单选题It is an()condition precedent in every voyage charter-party that the ship shall proceed on the voyage without departure from her proper course.A implementedB impliedC impossibleD improper

考题 问答题什么是DNB(即偏离泡核沸腾)?

考题 问答题如果热流密度不高,不会达到偏离泡核沸腾工况,试问随着含汽量的升高,相继会出现什么传热工况?

考题 单选题()may be defined as a departure without justification and under no necessity from the proper and usual course of an agreed voyage,whereby the character and the incidents of such voyage are altered.A DeviationB ChangeC AlterationD Amendment

考题 单选题The path that a vessel is expected to follow,represented on a chart by a line drawn from the point of departure to the point of arrival,is the().A DR plotB track lineC headingD estimated course

考题 问答题低温沸腾、饱和沸腾、核沸腾、膜沸腾、熔断点的区别。

考题 单选题A vessel proceeding to London,England,from New York makes an unscheduled call at the port of Hamilton,Bermuda. What term is used to denote the voluntary departure from the usual course? ()A AlterationB DeviationC LibertyD Unscheduled stop

考题 单选题以下哪种沸腾状态不属于大空间沸腾换热的沸腾状态?()A 过冷沸腾B 自然对流沸腾C 模态沸腾D 泡态沸腾

考题 单选题液体沸腾操作时,工业上总是设法控制在()。A 自然对流区B 泡核沸腾区C 过渡区D 膜状沸腾区

考题 单选题对于工况II事件,通常应用的验收准则为最小偏离泡核沸腾比(DNBR)在双()%偏离泡核沸腾准则规定的限值以()。A 90上B 90下C 95上D 95下

考题 单选题工业生产中,沸腾传热操作应设法保持在()。A 自然对流区B 泡核沸腾区C 膜状沸腾区D 过渡区