更多“过滤式自救器适用于空气中氧气浓度不低于（）和一氧化碳浓度不高”相关的问题
暖通工程管道附件图例中，为（）。
暖通工程管道附件图例中，为（）。
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利群（江南韵）的产品特色是：甄选（）原料为配方核心，精选进口（），突出清晰雅致、绵长回甜品质特点。
A.清晰醇甜；天然提取香料和优质烟草提取物
B.甜润醇和；天然提取香料和优质烟草提取物
C.清晰醇甜；天然提取香精和优质茶叶提取物
D.甜润醇和；天然提取香精和优质茶叶提取物
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课程内容既要符合幼儿已有的发展水平，又能促进其进一步发展，即难度水平处在幼儿的“最近发展区”，指的是（）
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If you like mystery, chances are you’ve heard of Agatha Christie, possibly the world’s best-known my...A. interacted B. intended C. attempted D. reversed
As a woman of adventure that can (67) up a mystery, Agatha Christie worked well at creating splendid (68) and inventive personalities. 2010 is the memorial of her 120th anniversary year, 1890. To (69) this special occasion Christie fans around the world will be (70) in a series of celebrations in mid-September. Agatha was born on 15 September 1890 in the town of Torquay, England. She was the youngest of three children in a (71) wealthy family. Her mother Clara, was rather shy; Agatha (72) her greatly in personality. Agatha’s mother (73) that Agatha be taught to read when she was eight; however, by the age of five, Agatha had already taught herself to read. She also had a (74) in creating games to keep herself (75) at a very young age. As a child, Agatha Christie never (76) school. The rest of her education was (77) a mixture of tutors. At a very young age, she would spend part of her time reading (78) stories written by Sherlock Homes, which was a big (79) on her. Her creative talents were music and writing. As a shy child, unable to (80) expressed her feelings, she first turned (81) music as a means of expression. Her mother wanted her to be a concert pianist or a (82) opera singer. She was considered a (an) (83) pianist but she was too shy to (84) a career in music.
In a writing career that (85) more than half a century, Agatha Christie wrote about eighty novels. Her stories have been (86) for film, television, and radio. She is one of the most notable female crime writers in history.
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下列属于创伤https://assets.asklib.com/psource/2015110612324210817.jpg的是（）
A . 反https://assets.asklib.com/psource/2015110612324210817.jpg
B . 内倾性深覆https://assets.asklib.com/psource/2015110612324210817.jpg
C . 牙列排列不齐D . 平衡https://assets.asklib.com/psource/2015110612324210817.jpg
E . 对牙周组织产生创伤的阿https://assets.asklib.com/psource/2015110612324210817.jpg
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治疗沙眼宜选（）
A.磺胺嘧啶（SD）+TMP B.磺胺甲恶唑（SMZ）+TMP C.酞磺胺嘧唑（PST） D.磺胺醋酰钠（SA） E.磺胺嘧啶（SD）+链霉素
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不属于防火墙的主要作用是( )。
A . 抵抗外部攻击B . 保护内部网络C . 防止恶意访问D . 限制网络服务
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液压和润滑管道冲洗在酸洗合格后进行，冲洗液应采用（ ）。
A.酸中和液B．工作介质C．与工作介质相容的介质D．煤油E．轻柴油
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安全施工方案编审批及交底的规定，描述错误的是（）。
A.作业指导书应由施工单位组织编制并发布
B.施工方案的安全技术管理内容由施工项目部安全人员编制
C.专项安全施工方案应由项目部技术负责人组织编制
D.交底应由编制人负责完成
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当其他条件不变，市场利率下降时，( )。
A．会使投资者面临再投资风险
B．发行人行使赎回权的概率增加
C．债券价格下降
D．债券再投资收益率下降
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含10个以下氨基酸残基的肽称为（）。
A.肽
B.二肽
C.三肽
D.寡肽
E.多肽
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在密码的发展过程中（）起着至关重要的作用。
A . A、自然科学
B . B、数学
C . C、社会科学
D . D、几何学
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为什么对喷气燃料要同时提出相对密度和发热值的要求？要做到相对密度大、发热值高是否有矛盾？为什么？
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Romanticism began in the western Europe in the mid 18th century in the work of artists, poets and philosophers.
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通常NaOH含量的测定采用的试剂是（）。
A.盐酸
B.磷酸
C.乙酸
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