{{B}}Snowflakes{{/B}} You’ve probably heard that no two snowflakes are alike. Of course, nobody has ever confirmed that statement by examining every one of the estimated one septillion snowflakes that drift to Earth each year. Still, Kenneth Libbrecht, a professor at the California Institute of Technology, is confident that the statement is true. Snowflakes aren’t flaky, says Libbrecht. At their basic level, they’re crystalline. The lattice of every snowflake is six-sided in shape. The simplest snow crystals are six-sided flat plates and six-sided columns. Such crystals are common in places where the air is extremely cold and dry. Snow crystals acquire their special beauty when their simple six-sided symmetry blossoms. Under the right conditions, each of the s A. They have six columns. B. They are flaky. C. They are cubic in shape. D. They are six-sided. [判断题]工业化制造光气的方法是用二氧化碳和氯气做原料、以活性炭为催化剂合成光气。
A.正确 B.错误 [单项选择]主要用于收集处于某一时点状态上的社会经济现象的基本全貌,为国家制定有关政策提供依据的统计调查方式是()
A. 普查 B. 抽样调查 C. 统计报表 D. 典型调查 [多项选择]我国目前许多城市的建筑小区设( ),定时或全日供水,也采用这种小区给水方式。
A. 单体水箱 B. 贮水池 C. 水泵 D. 贮水池和集中泵房 [单选题]HMI上站台矩形图标显示稳定浅蓝色,表示( )
A.站台设置了跳停命令 B.无跳停命令,列车在站台停站 C.无跳停命令,站台没有列车停站 D. 站台设置了指定列车跳停命令" [判断题]认识的根本目的在于掌握事物的本质和规律,从而更好地解释世界。( )
[判断题]柜面办理转账汇款业务,系统自动选择最优支付汇路( )
A.正确 B.错误 [简答题]战略性人力资源管理就是以组织战略为导向,根据组织战略制定相应的人力资源管理政策、制度与管理措施,以推动组织战略实现的过程。请您谈一谈战略性人力资源管理有何特征?
[多选题]登录企业微信后,下方有哪些菜单栏?
A.消息 B.通讯录 C.工作台 D.设置 E.我 [简答题]某800吨油船送审电气图纸时,按普通货船要求的图纸目录送审,请分析.
[单项选择]25岁,孕35周,既往血压100/70mmHg,头痛1天,今日就诊查血压130/90mmHg,尿蛋白(++),最主要的诊断是()
A. 妊高征 B. 慢高合并妊娠 C. 慢性肾炎合并妊娠 D. 上感 E. 泌尿系感染 [多选题]下面对总部相关部门的职责说法正确的是( )
A.《运检管理规划》由国网运检部负责编制,其中包括提出生产技术改造投入建议 B.《调控运行规划》由国调中心负责编制 C.《营销管理规划》由国网营销部负责编制,其中包括提出营销投入建议 D.《建设管理规划》由国网基建部负责编制 [单项选择]当驶近火车路时,看到有电动式的机械讯号或有人拿着旗号警告有火车来时,你应()。
A. 停车在距离路轨最少1.5公尺(5呎) B. 加速尽快驶过火车路 C. 停车在距离路轨最少5公尺(15呎) D. 慢驶,小心前进 [单项选择]患者,男,20岁,近来感乏力,纳差,盗汗。查体:左上肺浊音;血沉: 50mm/h。诊断应考虑
A. 急性支气管炎 B. 肺结核 C. 肺炎 D. 胸膜炎 E. 肺脓肿 [单项选择]前序遍历序列与中序遍历序列相同的二叉树为______。
A. 根结点无左子树的二叉树 B. 根结点无右子树的二叉树 C. 只有根结点的二叉树或非叶子结点只有左子树的二叉树 D. 只有根结点的二叉树或非叶子结点只有右子树的二叉树 [判断题]约翰先生在我国无住所,但自2010年1月1日始一直在我国居住。按照现行税法规定,应当从2015年起对约翰先生来源于中国境内与境外的全部所得征收个人所得。( )
A.正确 B.错误 [单项选择]维新派的教育实践不包括( )
A. 办学堂 B. 办学会 C. 办报刊 D. 办近代学制 [判断题]伤员脱离电源后,对伤者有无脉搏的判断应同时触摸两侧颈动脉。
A.正确 B.错误 [判断题]用人单位与劳动者订立劳动合同时,应当将工作过程中可能产生的职业病危害及其后果、职业病防护措施和待遇等如实告知劳动者,并在劳动合同中写明,不得隐瞒或者欺骗。()
A.正确 B.错误 [简答题]简述MSA-P型应与哪些疾病相鉴别?
[判断题]重车情况下,在经过300-500m半径曲线时,限速45km/h,在经过300m以下半径曲线或侧向通过9号及以下道岔时,限速20km/h。
A.正确 B.错误 [单项选择]重庆的市树为()。
A. 黄葛树 B. 松树 C. 枫树 [单选题]感温电缆布线时必须是连续___、___的连续布线。
A.有抽头 、有分支 B.无抽头 、有分支 C.无抽头 、无分支 D.有抽头 、无分支 [判断题]审计工作采取现场审计与非现场审计相结合的方式。( )
A.正确 B.错误 [单选题]当前后起飞离场或前后进近着陆的航空器分别为:前机 A380-800 或者非 A380-800 的重
型机,后机为 A380-800 时,其雷达尾流间隔不少于()千米A. 12.0
B. 13.0
C. 15.0
D. 按照规定的雷达间隔标准执行,无尾流间隔限制
A.A B.B C.C D.D [单项选择]One phase of the business cycle is the expansion phase. This phase is a two-fold one, including recovery and prosperity. During the recovery period there is ever-growing expansion of existing facilities, and new facilities for production are created. More businesses are created and older ones expanded. Improvements of various kinds are made. There is an ever increasing optimism about the future of economic growth. Much capital is invested in machinery or "heavy" industry. More labor is employed. More raw materials are required. As one part of the economy develops, other parts are affected. For example, a great expansion in automobiles results in an expansion of the steel, glass, and rubber industries. Roads are required. Thus the cement and machinery industries are stimulated. Demand for labor and materials results in greater prosperity for workers and suppliers of raw materials, including farmers. This increases purchasing power and the volume of goods bought and sold. Thus prosperity
A. Toys B. Machine tools C. Foodstuffs D. Cosmetics 我来回答: 提交
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