单选题
发布日期:2021-03-22
high pressure liquid
low pressure vapor
high pressure vapor
low pressure liquid
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物质从一种状态转变为另一种状态,并在瞬间放出大量能量的现象称为()
()的教育代表作是《国民教育与民主主义》。
()是指任何可以减少、消除、避免自然灾害或人为灾害的长期行动;通过减灾行动的实施,如相关政策的管理,调和人文与实质环境等,达到降低灾害发生的机会或有效减少其破坏程度。
简述教育信息化的概念
企业及其各个生产环节在相等的一段时间内生产相等或递增数量相等的产品,这是属于生产的()特征。
某公司下列再次发行债券的行为不应核准的是:()
我国的基本养老保险制度是由政府主导的社会统筹形式的制度。()
铁路军事运输整列装车时,由于部队装备物资临时变化,个别装载加固方案与原定方案不符时,装车站应如何处理?
()指资金需求方在出售证券的同时与证券的购买方约定在一定期限后按约定价格购回所卖证券的交易行为。
下列尤文肉瘤的临床特点,错误的是()。
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