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【简答题】
17-73.题73图为计算机软件系统关系图。图中★标识的软件是______。
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举一反三
【简答题】近代使“桐城派”古文“中兴”的重要人物，首先是______，他的古文具有“清淡简朴”的特点，后来曾国藩既详述桐城派古文家的源流，又网罗幕府人才，从而使“桐城派”古文形成了“中兴”的局面。
【单选题】— Li Na won the tennis championship in the French Open on June 4, 2011. — We take pride in her. She is the first Asian professional tennis player to win it. 选出意思与划线部分相同的选项: [ ]
A.
are interested in
B.
are terrified of
C.
are proud of
【单选题】In 2011 Li Na won the French Open singles title, which made her .
A.
Asia’s first and only Grand Slam doubles champion
B.
career ranking rise to as high as World No. 5
C.
known all over the world
D.
Asia’s first and only Grand Slam singles champion
【单选题】In 2011 Li Na won the French Open singles title, which made her ( ).
A.
Asia’s first and only Grand Slam doubles champion
B.
career ranking rise to as high as World No. 5
C.
known all over the world
D.
Asia’s first and only Grand Slam singles champion
【简答题】简述清代家具的特点
【多选题】锅炉的过热器损坏主要指过热器爆管。这种事故发生后,蒸汽流量明显下降,且不正常地小于给水流量;过热蒸汽温度上升,压力下降;过热器附近有明显声响,炉膛负压减小,过热器后的烟气温度降低。下列有关过热器损坏的原因中叙述正确的是( )。
A.
锅炉满水、汽水共腾或汽水分离效果差而造成过热器内进水结垢,导致过热爆管
B.
受热偏差或流量偏差使个别过热器管子超温而爆管,启动、停炉时对过热器保护不善而导致过热爆管,吹灰不当,损坏管壁等
C.
工况变动使过热蒸汽温度上升,造成金属超温爆管,管内异物堵塞
D.
材质缺陷或材质错用,制造或安装时的质量问题,特别是焊接缺陷
E.
给水品质不符合要求,特别是未进行除氧,管子水侧被严重腐蚀,烟速过高或烟气含灰量过大,飞灰磨损严重等
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