【判断题】
正线整体道床地段为1980根/km。
A. 对
B. 错
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答案
B
解析
暂无解析
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道床顶面高程以轨枕承轨面高出道床顶面40~50mm。
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整体道床根据轨枕间距分段布置,一般地段每12m左右设一道宽20mm的伸缩缝。
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整体道床U型槽及洞口48m范围内、联络通道前后各24m范围内每6m左右设一道伸缩缝。
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【判断题】
整体道床隧道结构变形缝处道床也应设置伸缩缝,伸缩缝应位于两根枕中间。
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【判断题】
曲线两端直线轨向不良,一般应事先拨正,两曲线间直线段较短时,可与两线同时计算、拨正。
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按绳正法计算拨道量,计算时不宜为减少拨道量而大量调整计划正矢。
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【单选题】
a
A. a
B. b
C. c
D. d
【单选题】
1.煤燃烧产生热量的元素是(  )。(每题2分) A.氧        B. 氮      C.氢        D.铁
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【单选题】
2.变质程度最浅的煤是(  )。 A.贫煤    B.烟煤      C.褐煤     D.无烟煤
A. 贫煤
B. 烟煤
C. 褐煤
D. 无烟煤
【单选题】
3.煤中(  )是可以燃烧的。 A.水分     B.灰分      C.固定碳      D.含氧量
A. 水分
B. 灰分
C. 固定碳
D. 含氧量
【单选题】
4.影响锅炉结渣最重要的煤质指标是(  )。 A.煤的发热量      B.煤的挥发分       C.煤的灰分         D. 灰的熔融温度
A. 煤的发热量
B. 煤的挥发分
C. 煤的灰分
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【单选题】
5.煤的变质程度越深,含氧量越(   )。 A.越多     B.变质程度与含氧量无关    C. 越少
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1.按《标准化法》,我国标准分___________ 、_____________ 、_________________和企业标准四级。(每空1分)
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2.煤中硫的存在形态通常分为___________和________________两大类。
【填空题】
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【填空题】
4.煤的工业分析包括煤的__________、____________、_____________和____________四个项目。
【填空题】
5.我国煤炭分类的主要指标是__________和______________。
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6.烟煤中最接近无烟煤的是____________,最接近褐煤的是_____________。
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7.煤常用的基准有_________、收到基、____________、空气干燥基。
【填空题】
8.煤的变质程度越深,挥发分含量_____,固定碳含量越______。
【简答题】
名词解释(每题5分) 1.空气干燥基
【简答题】
名词解释 2.重复性界限
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名词解释 3.再现性临界差
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1.需要根据水分测定结果进行校正或换算的分析试验应在几天内同时测完?为什么?(每题7分)
【简答题】
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3.什么叫商品煤样?在何处采取商品煤样?
【简答题】
4.煤中水分按其结合状态分有哪几类?它们有什么区别?
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5.煤质分析测定结果采用的数字俢约规则是什么?
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计算题(10分) 1.已知某煤样Mad=3.00%,Aad=11.00%,Vad=24.00%,求其Wad(FC)。
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( ),是金石和发展中国特色社会主义的本质要求和重要保障,是实现国家治理体系和治理能力现代化的必然要求
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B. 以德治国
C. 全面依法治国
D. 党的领导
【单选题】
( )第一次明确提出:为了保障人民民主,必须加强法制建设。必须使民主制度化、法律化,使这种制度和法律不因领导人的改变而改变,不因领导人的看法和注意力的改变而改变
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当前,政法各部门相继提出了诸如审判公开、检务公开、警务公开等一系列的规定和办法,这集中体现了公平正义理念对政法工作的哪项要求。( )
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【多选题】
Which three design requirements must be satisfied to enable RAID-6 objects in a VMware vSAN cluster? (Choose three.)___
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B. vSAN stretched cluster
C. at least six hosts contributing storage
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【多选题】
When using "Cluster resource percentage" for host failover capacity in vSphere HA Admission Control, the total resource requirements are calculated from which two values? (Choose two.)___
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B. Average CPU usage on each VM over time.
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F. CPU reservations on each VM.
【多选题】
Which are four attributes of the Active vCenter HA node? (Choose four)___
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F. It provides a quorum to protect against split-brain situations.
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Which are two vCenter Server two-factor authentication methods? (Choose two.)___
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An administrator is creating VMkernel adapters on an ESXi 6.5 host and wants to create separate VMkernel adapters for every type of traffic in the default TCP/IP stack. Which three types of traffic can be explicitly enabled on a separate VMkernel adapter? (Choose three.)___
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