我国将于2022年前后发射4艘载人飞船
<p>5月5日，长征五号<span word="B">B</span>运载火箭首次飞行任务取得圆满成功，拉开了我国空间站在轨建造阶段飞行任务的序幕。</p><p> 5月5日，为我国载人空间站工程研制的长征五号<span word="B">B</span>运载火箭在海南文昌首飞成功。中国载人航天工程办公室表示，长征五号<span word="B">B</span>运载火箭首飞成功，验证了新型火箭的总体设计和技术，同时也标志着我国载人航天工程第三阶段——空间站在轨建造——拉开序幕。</p><p>【知识点】</p><p>1992年，党中央作出实施载人航天工程“三步走”发展战略第一步，发射载人飞船第二步，突破航天员出舱活动技术2017年4月20日19时41分，天舟一号货运飞船第三步，建造空间站，解决有较大规模的、长期有人照料的空间应用问题按计划，我国空间站将于2022年前后完成建造，一共规划12次飞行任务。</p><p><span word="After">After</span> <span word="the">the</span> <span word="maiden">maiden</span> <span word="flight">flight</span> <span word="of">of</span> <span word="the">the</span> <span word="Long">Long</span> <span word="March">March</span>-5<span word="B">B</span>, <span word="the">the</span> <span word="core">core</span> <span word="module">module</span> <span word="of">of</span> <span word="the">the</span> <span word="space">space</span> <span word="station">station</span>, <span word="named">named</span> <span word="Tianhe">Tianhe</span>, <span word="and">and</span> <span word="two">two</span> <span word="experiment">experiment</span> <span word="capsules">capsules</span>, <span word="named">named</span> <span word="Wentian">Wentian</span> <span word="and">and</span> <span word="Mengtian">Mengtian</span>, <span word="will">will</span> <span word="be">be</span> <span word="sent">sent</span> <span word="into">into</span> <span word="space">space</span>.</p><p>此次任务后，将先后发射天和核心舱、问天实验舱和梦天实验舱。</p><p><span word="During">During</span> <span word="the">the</span> <span word="construction">construction</span> <span word="of">of</span> <span word="the">the</span> <span word="space">space</span> <span word="station">station</span>, <span word="China">China</span> <span word="plans">plans</span> <span word="to">to</span> <span word="launch">launch</span> <span word="four">four</span> <span word="Shenzhou">Shenzhou</span> <span word="manned">manned</span> <span word="spaceships">spaceships</span> <span word="and">and</span> <span word="four">four</span> <span word="Tianzhou">Tianzhou</span> <span word="cargo">cargo</span> <span word="spacecraft">spacecraft</span> <span word="to">to</span> <span word="transport">transport</span> <span word="astronauts">astronauts</span> <span word="and">and</span> <span word="supplement">supplement</span> <span word="materials">materials</span></p><p>其间，规划发射4艘神舟载人飞船和4艘天舟货运飞船，进行航天员乘组轮换和货物补给。</p>
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