热门试题:
[填空题]群桩基础由于桩侧土摩阻力的扩散作用,使得桩群的工作性状与单桩显著不同的现象称为()。
[单选题] 下列不需停用线路重合闸的情况是( )。
A.对线路充电时
B.重合闸装置异常时
C.断路器切断故障电流次数未超过规定次数时
D.线路有明显缺陷时
[填空题]使用电子计算机开具发票应经()批准,并使用税务机关统一监制的机外发票,开具后的存根应当按照顺序号装订成册。
[单选题] 平面连杆机构至少有一个构件为( )。
A.曲柄
B.摇杆
C.连杆
D.导杆
[判断题]防超模式和防冒模式的控制方式一样。( )正确为不一样P167T668
A.正确
B.错误
[单选题] 非气体钻井条件下,应根据岩屑沉淀情况选择在( )进行取样。(出自
A.合理的位置
B.振动筛前
C.高架槽内
D.振动筛前或高架槽内
[简答题]【问题1】
为什么要从vlan2,而不是从vlan1开始配置
[单项选择]Questions 29 to 31 are based on the passage you have just heard.
A. The newcomers don’t like the new environment shortly after their arrival.
B. The newcomers begin to hate the city, the country in the new culture.
C. The newcomers begin to enjoy their life more after they leave the country,
D. The newcomers begin to adjust to their surroundings and enjoy their life.
[单选题]机场管理机构和公共航空运输企业应当对本单位()进行月度统计分析,以及年中、年度全面统计分析。
A.仅一类民航安保事件信息
B.仅二类民航安保事件信息
C.一类民航安保事件信息和二类民航安保事件信息
D.以上都是
[单项选择]法律文书的()必须以有关的法律规定为根本依据。
A. 事实、理由
B. 事实、证据
C. 立意、内容
D. 立意、理由
[判断题]还原反应的中间体,特别是硝基化合物还原反应的中间体,已不具有火灾危险。
A.正确
B.错误
[单选题]固体可燃物表面温度超过( )时,可燃物接触该表面有可能一触即燃。
A.可燃物燃点
B.可燃物闪点
C.100℃
[不定项选择题]共用题干
A Powerful Influence
There can be no doubt at all that the Internet has made a huge difference to our lives.Parents are worried that children spend too much time playing on the Internet,hardly______(1) doing anything else in their spare time.Naturally,parents are______(2)to find out why the Internet is so attractive,and they want to know if it can be______(3) to their children.Should parents worry if their children are spending that much time______(4) their computers?
Obviously,if children are bent over their computers for hours,______(5) in some game,in-stead of doing their homework,then something is wrong.Parents and children could decide how much use the child should______(6) of the Internet,and the child should give his or her______(7) that it won't interfere with homework.If the child is not______(8) to this arrangement,the parent can take more drastic______(9)dealing with a child's use of the Internet is not much dif-ferent from______(10) any other soft of bargain about behaviour.
Any parent who is______(11) alarmed about a child's behaviour should make an appointment to______(12)the matter with a teacher.Spending time in front of the screen does not ______(13)affect a child's performance at school.Even if a child is______(14)crazy about using the Internet, he or she is probably just______(15) through a phase,and in a few months there will be some-thing else to worry about!
12._________
A.speak
B.discuss
C.talk
D.debate
[单项选择]
某数据库中有员工关系E、产品关系P、仓库关系W和库存关系I,其中:
员工关系E(employeelD,name,department)中的属性为:员工编号,姓名,部门;
产品关系P(productID,name,model,size,color)中的属性为:产品编号,产品名称,型号,尺寸,颜色;
仓库关系W(warehouselD,name,address,employeeID)中的属性为:仓库编号,仓库名称,地址,员工编号;
库存关系I(warehouseID,productID,quantity)中的属性为仓库编号,产品编号和产品数量。
a.若要求仓库关系的负责人引用员工关系的员工编号,员工关系E的员工编号、仓库关系W的仓库编号和产品关系P的产品编号不能为空且惟一标识一个记录,并且仓库的地址不能为空,则依次要满足的完整性约束是()
b.可得到每种产品伪名称和该产品的总库存量的查询语句为;
SELELCT name,SUM(quantity)
FROM P,I
WHERE()
依次要满足的完整性约束是()
A. 实体完整性、参照完整性、用户定义完整性
B. 参照完整性、实体完整性、用户定义完整性
C. 用户定义完整性、实体完整性、参照完整性
D. 实体完整性、用户定义完整性、参照完整性
[判断题]在运信息系统发生较大变更,可直接上线。
A.正确
B.错误
[判断题]在邻近可能误登的其他鉄构架上,应悬挂“禁止攀登,高压危险!”的标示牌。()
A.正确
B.错误
[多项选择]需提供英文在职证明的国家有()
A. 瑞士
B. 新加坡
C. 西班牙
D. 尼泊尔
[单选题]行政执法机关作出( )之前,必须进行法制审核,未经法制审核或者审核未通过的,不得作出决定。
A.疑难执法决定
B.所有执法决定
C.复杂执法决定
D.重大执法决定
[单选题]明代四大奇书不包括( )
A.《三国演义》
B.《红楼梦》
C.《西游记》
D.《金瓶梅》
[单选题]《化学品生产单位特殊作业安全规范(GB 30871-2014)》规定,在生产、使用、储存氧气的设备上进行动火作业时,设备内氧含量不应超过( )%。
A.21
B.22
C.23
D.23.5
[判断题]一切危害社会的行为,必须是依照法律规定应当受刑罚处罚的,才是犯罪;对情节显
著轻微危害不大的,不认为是犯罪。
A.正确
B.错误
[单项选择]
Design of all the new tools and implements is based on careful experiments with electronic instruments. First, a human "guinea pig" is tested using a (31) tool. Measurements are taken (32) the amount of work done, and the buildup of heat in the body. (33) joints and stretched muscles cannot (34) as well, it has been found, (35) joints and muscles in their (36) positions. The same person is then tested again, using a tool designed according to the suggestions made by Dr. Tichauer. All these tests have shown the great (37) of the new designs over the old.
One of the electronic instruments used by Dr. Tichauer, the myograph (肌动描记器), (38) visible through electrical signals the work done by human muscle. Another machine (39) any dangerous features of tools, thus proving information upon (40) to base a new design. One (41) of tests made with this machine is that a tripod stepladder is more A. inference
B. conclusion
C. summary
D. investigation
[单项选择]用下列哪种情况的S型肺炎双球菌感染健康小鼠,会使之生病和死亡的是()
A. 加热杀死的S型菌
B. 活的R型菌
C. 加热杀死的S型菌和活的R型菌的混合物
D. 加热杀死的R型菌
[单项选择]当电梯发生超速跋涉时,()是束缚电梯速度的保护设备。
A. 缓冲器
B. 限速器
C. 限位设备
D. 极限设备
[单选题]三极管超过()时,必定会损坏。
A.集电极最大允许电流Icm
B.管子的电流放大倍数β
C.集电极最大允许耗散功率Pcm
[多选题]塔式起重机在安装前和使用过程中,发现有( ),不得安装和使用。
A.结构件上有可见囊纹和严重锈蚀的
B.安全装置不齐全成失效的
C.连接件存在严重磨损和塑性变形的
D.主要受力构件存在塑性变形的
E.钢丝绳达到报废标准的
[单项选择]患者男性,40岁,上腹被车撞伤2h,面色苍白,烦躁,脉搏细弱,130次/分,血压60/40mmHg。下列哪些检查最有诊断意义()
A. 立位X线腹平片
B. 血常规
C. 腹腔穿刺
D. 腹部B超
E. 以上都不是
[单选题]十二项禁令规定:严禁不进行( )开展检修(施工)作业。
A.资格审查
B.危险点告知
C.布置安全措施
D.安全技术交底
[判断题] 中国人民银行和中国人民银行授权的国有独资商业银行的业务机构应当无偿提供鉴定人民币真伪的服务。()
A.正确
B.错误
[单选题]TB/T 2340-2000标准规定,钢轨探伤仪水平线性误差不大于( )。
A.2%
B.3%
C.4%
D.15%
[多项选择]产生信用风险的国际因素包括()。
A. 宏观环境的不确定性
B. 对外贸易的金融环境的不确定性
C. 信用欺诈等有关信息不够畅通
D. 信用风险管理水平国际间失衡
E. 信用欺诈司法约束不足
[判断题]进入受限空间作业作业,注意施工条件发生重大变化,若施工条件发生重大变化,应重新办理《作业证》
A.正确
B.错误
[单选题]双日检检查闸瓦安装正确,闸瓦钎无丢失,开口销安装正确角度>()°。
A.30
B.60
C.90
D.120
[单选题]下列车辆属于特种用途车的是( )。
A.长大货物车
B.机械冷藏车
C.客车
D.检衡车
[单项选择]
{{B}}Part A{{/B}}
{{I}} You will hear 10 short dialogues. For each
dialogue, there is one question and four possible answers. Choose the correct
answer—A, B, C or D, and mark it in your test booklet. You will have 15 seconds
to answer the question and you will hear each dialogue ONLY ONCE.
Now look at Question 1.{{/I}}
Where did the conversation most probably take place
A. In a library.
B. In a classroom.
C. In a bookstore.
D. In a park.
[单项选择]患者,女,39岁,有风湿性心脏病史,心尖区隆隆样舒张期杂音和3/6级吹风样收缩期杂音,初步诊断为
A. 二尖瓣狭窄
B. 二尖瓣关闭不全
C. 主动脉瓣狭窄
D. 二尖瓣狭窄伴二尖瓣关闭不全
E. 三尖瓣狭窄伴三尖瓣关闭不全
[多项选择]属于系统误差的有( )。
A. 试剂不纯造成的误差
B. 操作者判断滴定终点颜色偏深造成的误差
C. 温度变化造成的误差
D. 滴定管刻度不准造成的误差
E. 天平砝码不准引入的误差