相关试题
【单选题】
人们认为在能源消耗、噪南等方面哪种方式更优越___.
A. 内燃列车
B. 磁悬浮
C. 气悬浮
D. 电力列车，
【单选题】
我国第一台交一直一交流电传动电力机车是___
A. 6Y1型
B. 韶山3型
C. 东方红3型
D. AC4000型
【单选题】
___在国家的法律体系中具有最高法律效力。。
A. 劳动法律
B. 宪法
C. 国务院劳动行政法规
D. 劳动规章。
【单选题】
劳动法的首要原则是___
A. 保障劳动者的劳动权
B. 物质幣助权
C. 报酬权限
D. 休息休假权
【单选题】
___是企业识别 系統的核心。。
A. 企业理念识别
B. 企业制度
C. 企业信誉
D. 员工素责
【单选题】
企业第一核心竞争力是企业的___。 。
A. 资
B. 核心价值观
C. 技术
D. 地理位置。
【单选题】
“企业的办公室里洁净、井然有序”反应了企业文化里的___。
A. 感情文化
B. 制度文化
C. 物质文化
D. 办公文化。
【单选题】
企业文化建设的第一项原则是___。
A. 人本原则
B. 共识原则
C. 目标原则
D. 创新原则
【多选题】
脑出血的特点是突然发病，常在白天发病。可由___等原因引起。
A. 剧烈运动
B. 饮酒
C. 情绪激动
D. 早睡早起
【多选题】
公文的特点有哪些? ___ 。
A. 行文的权威性
B. 作者的法定性
C. 制发的程序性
D. 体式的规范性。
【多选题】
我国行政法规的名称，按照《行政法规制定程序条例)规定为___
【单选题】
单选题 [2] EDTA酸效应曲线不能回答的问题是___。’
A. 进行各金属离子滴定时的最低pH
B. 在一定pH范围内滴定某种金属离子时，哪些离子可能有干扰
C. 控制溶液的酸度，有可能在同一溶液中连续测定几种离子
D. 准确测定各离子时溶液的最低酸度
【单选题】
___。
A. lgαY(H)≥lgKMY -8
B. lgαY(H)= lgKMY -8
C. lgαY(H)≥lgKMY -6
D. lgαY(H)≤lgKMY -3
【单选题】
液返滴定过量的EDTA，此金属离子标准溶液最好选用___。
A. Ca2+
B. Pb2+
C. Fe3+
D. Mg2+
【单选题】
单选题 [3]用EDTA标准滴定溶液滴定金属离子M，若要求相对误差小于0.1%，则要求___。
A. cMK 'MY≥10＾6
B. cMK 'MY≤10＾6
C. K' MY≥10＾6
D. K'MYα Y(H)≥10＾6
【单选题】
单选题 [3]直接配位滴定终点呈现的是___的颜色。
A. 全属-指示剂配合物
B. 配位剂-指示剂混合物
C. 游离金属指示剂
D. 配位剂-金属配合物
【单选题】
单选题 [2] Al3+能封闭铬黑T指示剂，加入___可解除。
A. 三乙醇胺
B. KCN
C. NH4F
D. NH4SCN
【单选题】
单选题 [2]用EDTA测定Zn2+时，Cr3+干扰，为消除影响，应采用的方法是___。
A. 控制酸度
B. 配位掩蔽
C. 氧化还原掩蔽
D. 沉淀掩蔽
【单选题】
单选题 [3]提高配位滴定的选择性可采用的方法是___。
A. 增大滴定剂的浓度
B. 控制溶液温度
C. 控制溶液的酸度
D. 减小滴定剂的浓度
【单选题】
单选题 [2]配位滴定中加入缓冲溶液的原因是___。
A. EDTA配位能力与酸度有关
B. 金属指示剂有其使用的酸度范围
C. EDTA与金属离子反应过程中会释放出H+
D. K'MY会随酸度改变而改变
【单选题】
消耗30.00mL，则试样中CaO的含量为___。M(CaO) =56.08g／mol。
A. 3.00%
B. 6.01%
C. 12.02%
D. 30.00%
【单选题】
N的条件是___。
A. lgKNY -lgKMY≥2和lgcK 'MY≥6和lgcK 'NY≥6
B. lgK NY -IgKMY≥5和lgcK 'MY≥3和lgcK 'NY≥3
C. lgK MY -lgKNY≥5和lgcK 'MY≥6和lgcK 'NY≥6
D. lgKNY -lgKMY≥8和lgcK'MY≥4和lgcK'NY≥4
【单选题】
单选题 [2]滴定近终点时，滴定速度一定要慢，摇动一定要特别充分，原因是___。
A. 指示剂易发生僵化现象
B. 近终点时存在一滴定突跃
C. 指示剂易发生封闭现彖
D. 近终点时溶液不易混匀
【单选题】
单选题 [2]在配位滴定中，直接滴定法的条件包括___。
A. lgcK'MY≤8
B. 溶液中无干扰离子
C. 有变色敏锐无封闭作用的指示剂
D. 反应在酸性溶液中进行
【单选题】
单选题 [1]已知几种金属浓度相近，lgKNiY=19.20，lgKCeY=16.0，lgKZnY=16.50，lgKCaY=10.69，lgK AIY =16.3，其中调节pH值就可不干扰Al3+测定的是___。
A. Ni2+
B. Ce2+
C. Zn2+
D. Ca
【单选题】
阿里云混合云存储阵列的云卷上云切片大小
【单选题】
阿里云混合云存储阵列的云卷通过.＿＿对块卷进行安全认证
A. TCP
B. CHAP
C. SAP
D. OLAP
【单选题】
阿里云混合云存储阵列的块设备数据保护特性不包括＿＿
A. 多版本本地快照回滚
B. 异地云卷备份
C. 阵列间卷同步复制
D. 云卷快照回滚
【单选题】
混合云容灾中单台HDR配置最高可达多少备份容量
A. 100T
B. 80T
C. 60T
D. 120T
【单选题】
混合云备份支持哪些技术保证数据一致性
A. OSS
B. 文件系统VSS
C. 数据验证
D. Key-value
【单选题】
客户策略设置每天生成一个云卷快照，最多可以保留多少天的云端快照数据
A. 1024
B. 2048
C. 4096
D. 6498
【多选题】
混合云备份虚拟机恢复时支持哪些特性
A. 恢复存储路径
B. 恢复虚拟机计算节点
C. 恢复到哪个vsphere 平台
D. 恢复虚拟机文件
【多选题】
灾备的计费项
A. 灾备一体机
B. 售后服务
C. 上云授权
D. 服务器数量
E. 云灾备库
【多选题】
混合云备份不适合的场景
A. 灾备5级
B. AFX小机
C. Oracle
D. 海量存储
【多选题】
混合云安全不具备的特性
A. 目的端数据删除
B. 国密算法
C. saphana
D. Aes256
E. AK认证
【单选题】
单选题 [2]在EDTA配位滴定中，下列有关酸效应系数的叙述，正确的是___。
A. 酸效应系数越大，配合物的稳定性越大
B. 酸效应系数越小，配合物的稳定性越大
C. pH值越大，酸效应系数越大
D. 酸效应系数越大，配位滴定曲线的pM突跃范围越大
【单选题】
单选题 [2]金属指示剂的僵化现象可以通过下面哪种方法消除___。
A. 加入掩蔽剂
B. 将溶液稀释
C. 加入有机溶剂或加热
D. 冷却
推荐试题
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
Many power stations have been modernized to give off less pollution, or they were moved further away from the living areas in order to [ ] the damage,
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
Unemployment has come down slightly, but this does not [ ]the fact that it is still a major problem
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
Mr. Smith is not doing well; the doctor told us that several colds [ ]his health
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
The best way to deal with problems at home is to talk things out calmly and honestly and try to reach a(n) [ ]
【填空题】
open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in，
Experts say our company is amazing in that sales have been increasing steadily [ ]
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
After 10 years of full-time training, she has,finally [ ] as a professional dancer.
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
[ ], what is the point in taking part in the competitive event if the result is only to prove how incompetent you are?,
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
Redecorating the house is a challenging task. It's necessary to [ ] the wallpaper first.
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
I never really had any problems with change. On the contrary, I welcome change [ ]
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
A lot of what we [ ] is made from raw materials which are not renewable
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
Megan and John realized that their house was too messy for a new baby, so they decided to [ ] their house before the baby was born
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
Jennifer couldn't [ ] her tears when she saw the sick children at a new blood cancer center in Virginia
【填空题】
make it， with open arms ，strip off，keep back，
free of/ from ，after all，straighten up， throw away
We want to give all children a world [ ] violence
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
Fortunately, the accident didn't [ ] many people, for there was little traffic at that hour.
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
She[ ] her ambition of becoming a fashion designer after years of hard work
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
They kept on trying their best to develop
their business, but in such [ ]market competition, they had no Idea if success would come along one day
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
As music plays an important role in our life, many music teachers and educators [ ] taking up a musical instrument at a young age
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
This rule should be entirely clear in the minds of everyone and should not be misunderstood under any [ ]
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
My daughter was shy; she was afraid to ask questions,[ ] to questions in class,or talk with other children
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
I got from him only a letter, which was put on my office desk; [ ] to the receipt of this letter I have never heard from him
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
The duties to provide services for children in need are not [ ] to the local social services department
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
We pray that all nations be [ ] and that all people around the world live in peace
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
It was reported the president had [ ]to fight If war was necessary,even if it meant destroying his chances of re-election
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
I had to [ ] one of my email accounts as it was filled with junk mail
【填空题】
controversial，assess， resolve，decrease，alter，abandon，indicate，undermine，compromise， conventional
Darwin's theory of evolution remains[ ] partly because it challenges the religious belief that God created man
【填空题】
advocate，involve，confine，respond，subsequent ，distinct ，intense， fulfill，circumstance， reconcile
He suggested a small but [ ] improvement on our former plan; I really appreciate it.
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
She held her hand above her eyes to [ ]them [ ] the sun so that she could see more clearly the man in front of her
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
The boy studied the signs for over an hour,but still could not [ ]them, so he turned to his teacher for help
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
They [ ] the developed countries to commit more money to protecting the environment
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
We will continue to care for those [ ] and work to establish a society that is generous and prosperous
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
Many people [ ]careers and raising kids so that they forget that their marriages also need to be taken good care of
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
My most favorite program is the one that deals with scientific subjects that ordinary people can [ ]
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
Finally, I would like to [ ]by saying that it has been a tremendous pleasure to work with you all
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
He is a person that you always [ ]when you need help.
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
be/ get caught up in
This restaurant is very popular because it has some separate, smaller rooms [ ] families with small children
【填空题】
in sb. 's words，count on，make sense of ，reserve for， shield from，call on， sum up， relate to ，in need，
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Betty loves reading.[ ],“Reading is the most wonderful thing in the world.”
【填空题】
open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in，
Every one of you has made a contribution and I [ ] knowledging what each of you has done to make this academic convention such a success.
【填空题】
open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in
They all tried to talk [ ], but I couldn't hear anything they said
【填空题】
open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in，
Yellow flowers in the field always [ ] me [ ] my childhood in the countryside
【填空题】
open the door to，In advance，all at once，reap the benefits (of)， make the most of，over time， get by， stand a chance (of)，remind of， take pleasure in，
We have been practicing for so long and so hard that our team should [ ]winning the game
