热门试题:
[单项选择]增压机入口管线进来的空气，通过增压机（）来控制其流量的大小
A. 入口导叶的开度
B. 入口阀门
C. 出口压力
[判断题]需求拉动通货膨胀形成的原因是“太多的货币追逐较少的产品”。
[单选题]二次回路接线工作完成后，要进行交流耐压试验，试验电压为( )，持续1min。
A.220V；
B.500V；
C.1000V；
D.2500V。
[单项选择]帮助生活不能自理老人饮水时，错误的做法是( )。
A. 将用物携至老人处，向老人解释，取得合作
B. 协助老人取坐位、半坐位或卧位
C. 将小毛巾围于老人后颈部
D. 观察询问老人有无不适
[多选题] 配电带电作业统计数据包括( )。
A.作业次数及作业项目
B.多供电量
C.不停电作业化率
D.停电时户数。
[多选题]空调在辅助逆变器故障时的运行模式描述正确的是（ ）。
A、仅有1台辅助逆变器发生故障，空调机组正常运行 B、仅有1台辅助逆变器发生故障，空调机组减载一半运行
C、2台辅助逆变器发生故障，空调减载一半运行
D、2台辅助逆变器发生故障，空调将运行紧急通风模式
A.A
B.B
C.C
D.D
[填空题]传递国家秘密载体,应当通过( )、机要通信或者其他符合保密要求的方式进行。
[多选题]政府性债务包括（ ）。
A.政府负有偿还责任的
B.政府负有担保责任的
C.政府可能有一定救助责任的
D.政府出资成立的下属企业承担的用于基础设施建设的债务
[判断题]变压器二次侧额定电压是变压器额定运行时二次侧的电压。 ( )
A.正确
B.错误
[单选题] 职业素质是劳动者对社会职业了解与适应能力的一种综合体现,其主要表现在职业兴趣、( )、职业个性及职业情况等方面。
A.消费者
B.职业能力
C.生产者
D.个人
[单选题]盲板抽堵作业人员不得正对（ ）。
A.盲板
B.阀门
C.法兰缝隙
D.管线
[单选题]下列说法中，只有( )是正确的。
A.ROM是只读存储器，其中的内容只能读一次，下次再读就读不出来了
B.硬盘通常安装在主机箱内，所以硬盘属于内存
C.CPU不能直接与外存打交道
D.任何存储器都有记忆能力，即其中的信息不会丢失
[判断题]财务利益最大化是纳税筹划首先应遵循的最基本的原则。
[单选题]弧垂减小导线应力（ ）
A.增大
B.减小
C.不变
D.可能增大，可能减小
[单选题] 单模光纤1310nm衰减为（ ） 。
A.0.4~0.6dB/km
B.0.6~0.8dB/km
C.1~1.2dB/km
D.0.8~1dB/km
[判断题]电路元件在电路中的作用或者说它的性质是用其两端的电压决定的。（）
A.正确
B.错误
[单项选择]人民法院适用简易程序审理的案件，审结期限为几个月，而且该期限不得延长( )。
A. 1个月
B. 3个月
C. 5个月
D. 6个月
[单选题]许可证签发主管必须将每日的探伤工作信息传达给在GDLNG现场、办公区域的所有工作人员，确保他们知道所有受射线探伤影响的区域。并且确保他们()。提醒工人不要进入或穿越控制区域
A.严格遵守既定的射线作业规定
B.有照驾驶
C.佩戴合格PPE
[单选题]微束等离子弧焊接采用( )等离子弧。
A.接型
B.转移型
C.非转移型
D.联合型
[单选题]接发旅客列车时，与接发列车进路没有（ ）或脱轨器的线路，不准向能进入接发列车进路的方向调车。本务机车在停留线路内摘挂除外。
A.岔线
B.安全线
C.隔开设备
D.避难线
[单项选择]Prior to the 20th century, many languages with small numbers of speakers survived for centuries. The increasingly interconnected modern world makes it much more difficult for small language communities to live in relative isolation, which is a key factor in language maintenance and preservation.
It remains to be seen whether the world can maintain its linguistic and cultural diversity in the centuries ahead. Many powerful forces appear to work against it. population growth, which pushes migrant populations into the world’s last isolated locations; mass tourism; global telecommunications and mass media; and the spread of gigantic global corporations. All of these forces appear to signify a future in which the language of advertising, popular culture, and consumer products become similar. Already English and a few other major tongues have emerged as global languages of commerce and communication. For many of the world’s peoples, learning one of these languages is view
A. uncertain
B. unrealistic
C. foreseeable
D. definite
[简答题]某公司拟用新设备取代已使用3年的旧设备。旧设备原价170000元，当前估计尚可使用 5年，目前的折余价值为110000元，每年销售收入30000元，每年经营成本12000元，预计最终残值10000元，目前变现价值为80000元；购置新设备需花费150000元，预计使用5年，每年年销售收入60000元，每年经营成本24000元，预计最终残值10000元。该公司预期报酬率12%，所得税率30%。税法规定该类设备应采用直线法折旧。 要求： (1) 更新设备比继续使用旧设备增加的投资额 (2) 固定资产提前报废发生净损失减税 (3) 更新决策每年增加的折旧 (4) 经营期第1—5年每年增加的息税前利润 (5) 计算各年的差量净现金流量 (6) 利用差额内部收益率法，进行是否应该更换设备的分析决策，并列出计算分析过程。
[单选题]500kV线路边导线与建筑物之间的水平距离,在最大风偏情况下,不应小于10m。
A. 对
B. 错
[单选题]Social change is more likely to occur in societies where there is a mixture of different kinds of people than in societies where people are similar in many ways. The simple reason for this is that there are more different ways of looking at things present in the first kind of society. There are more ideas, more disagreements in interest, and more groups and organizations with different beliefs. In addition, there is usually a greater worldly interest and greater tolerance in mixed societies. All these factors tend to protnote social change by opening more areas of life to decision.
In a society where people are quite similar in many ways, there are fewer occasions for people to see the need or the opportunity for change because everything seems to be the same. And although conditions may not be satisfactory, they are at least customary and undisputed.
Within a society, social changes is also likely to occur more frequently and more readily in the material aspects of the culture than in the non-material, for example, in technology rather than in values; in what has been learned later in life rather than what was learned early; in the less basic and less emotional aspects of society than in their opposites; in the simple elements rather than in the complex ones; in form rather than in substance; and in elements that are acceptable to the culture rather than in strange elements.
Furthermore, social change is easier if it is gradual. For example, it comes more readily in human relations on a continuous scale rather than one with sharp difference. This is one reason why change has not come more quickly to Black Americans as compared to other American minorities,because of the sharp difference in appearance between them and their white counterparts.
According to the passage, which of the following is NOT true?
A.Social change tends to meet with more difficulty in basic and emotional aspects of society.
B.Disagreement with and argument about conditions tend to slow down social change.
C.Social change is more likely to occur in the material aspect of society.
D.Social change is less likely to occur in what people learned when they were young.
[判断题]未设置火灾应急广播的火灾自动报警系统，应设置火灾警报装置。
A.正确
B.错误
[单选题]晋升一级、二级消防士,由( )组织消防员衔级晋升培训。
A. 大队
B. 支队
C. 总队
D. 部局
[单选题]DS6-K5B在计算机联锁，当系统运行正常，面板指示灯D4灯亮表示（）。
A.APL开始执行
B.APL停止执行
C.数据连接成功
D.数据连接失败
[单选题]作业人员应经医师鉴定无妨碍工作的病症，体格检查每两年至少一次。
A.A.正确
B.B.错误
C.略
D.略
E.略
F.略
[单项选择]以围绕儿童的发展需要和兴趣为中心，以“做中学”为基本教学方法的课程形式是
A. 学科课程
B. 活动课程
C. 技能课程
D. 核心课程
[单选题]避雷器通常接于导线和地之间,与被保护设备( )。
A.并联
B.电流
C.串联
D.混联
[判断题]快开门压力容器内存在氢介质都可能使其材料发生氢腐蚀。( )
A.正确
B.错误
[判断题]动车组须按规定配置灭火器，定期检查并确保状态良好。
A.正确
B.错误
[判断题]高压开关的断路器和隔离开关之间的联锁关系是：只有当断路器断开后，隔离开关才能分断。
A.正确
B.错误
[单项选择]当人失血超过多少毫升，就有生命危险？（）
A. 800
B. 1000
C. 1200
D. 1400
[单选题]卡普隆又称尼龙6,是聚酰胺纤维之一种,它的单体是己内酰胺和
A.环己醇
B.氨基乙酸
C.对苯二甲酸二甲酯
D.萘
[单选题]通信检修施工过程中，如发现检修影响其他电网通信业务或一次系统运行的，检修施工单位应（ ）。
A.暂停或终止检修
B.报告
C.抢修
D.制止
E.略
F.略
[单选题]硬质梯子的横档应嵌在支柱上，并在距梯顶（）处设限高标志。
A.A-0.6m
B.B-0.8m
C.C-1.0m
D.D-1.2m
