工作风缸充风由列车管通过（）控制。 ["充气阀","滑阀","均衡阀","局减阀"]
In a high-availability deployment, when the Cisco CRS Administrator adds a JTAPI Call Control Group with 100 CTI ports, how many device records will be added to the Cisco Unified CallManager database?（） ["CTI Ports are not added by the creation of a Call Control Group. ","CTI ports are no longer required to be added to the Cisco Unified CallManager database. ","100 devices will be added to the Cisco Unified CallManager database. ","200 devices will be added to the Cisco Unified CallManager database. ","It depends upon how many port groups these ports will be split into. ","It depends upon the number of server nodes within the Cisco Unified CallManager cluster."]
矿物润滑油的精制
【背景资料】某建筑工程，建筑面积24642㎡，地上10层，地下2层（地下水位-2.0m）。主体结构为非预应力现浇混凝土框架剪力墙结构（柱网为9m*9m，局部柱距为6m），抗震设防烈度7度。梁、柱受力钢筋为HRB335.结构主体地下室外墙采用P8防水混凝土浇筑，墙厚250mm，钢筋净距60mm，混凝土为商品混凝土。一、二层柱混凝土强度等级为C40，以上各层柱为C30。
情形1：施工过程中，施工单位进场的一批水泥经检验其初凝时间不符合要求，另外由于工期要求很紧，地下室外墙施工不得不在气温只有-3℃时进行。
情形2：钢筋过程施工时，发现梁、柱钢筋的接头采用挤压连接，有位于梁、柱端箍筋加密区的情况。在现场留取接头试件样本时，是以同一层每600个为一验收批，并按规定抽取试件样本进行合格性检验。
情形3：结构主体地下室外墙防水混凝土浇筑过程中，现场对粗骨料的最大粒径进行了检测，检测结果为40mm。请根据背景资料完成以下选项。
下列不属于钢筋安装验收主控项目的是（） ["钢筋直径","钢筋数量","钢筋品种","力学性能检验"]
What is an advantage of an externally modulated laser over a directly modulated laser？ （） [" lower cost"," higher chirp"," easier to manufacture"," higher dispersion tolerance"," higher optical signal-to-noise ratio"]
论述市场经济条件下，资产评估的功能。
