热门试题:
[判断题]用水蒸汽充入密闭设备灭火,属于冷却灭火法。()
[判断题]对难以做到与电源完全断开的检修设备,也不可以拆除设备与电源之间的电气连接。( )
A.正确
B.错误
[单选题]励磁绕组与电枢绕组无联接关系,而由其他直流电源对励磁绕组供电的直流电机称为( )。
A.他励直流电机
B.并励直流电机
C.串励直流电机
D.复励直流电机
[单项选择]关于探针的叙述错误的是
A. 要加以标记、带有示踪物,便于杂交后检测
B. 应是单链,若为双链用前需先行变性为单链
C. 具有高度特异性,只与靶核酸序列杂交
D. 探针长度一般是十几个碱基到几千个碱基不等
E. 作为探针的核苷酸序列要选取基因非编码序列
[单项选择]最优化原则的具体要求包括( )
A. 痛苦最小
B. 安全无害
C. 疗效最佳
D. 耗费最少
E. 以上均正确
[单选题]在带电设备区域内使用起重机等起重设备时,应( ),接地线应用多股软铜线,其截面积不得小于16mm2。
A. 安装接地线
B.可靠接地
C.安装接地线并可靠接地
D.对角装设接地
[单项选择]已知多项式ax3+bx2+cx+d除以x-1的余式为1,除以x-2时,所得余式是3,那么ax3+bx2+cx+d除以(x-1)(x-2)时所得余式是()。
A. x+1
B. x-1
C. 2x-1
D. 2x+1
E. 2x+3
[多选题]在相互不知道行政职务时,消防救援衔级高的是( ),消防救援衔级低的是( ),消防救援衔级相同的是( )。( )
A. 上级
B. 下级
C. 下属
D. 同级
[多项选择]三羧酸循环中不可逆的反应有
A. 异柠檬酸→α→酮戊二酸
B. 乙酸CoA+草酸乙酸→柠檬酸
C. 琥珀酸CoA→琥珀酸
D. α-酮戊二酸→琥珀酸CoA
[判断题]数据库系统三级模式包括外模式、概念模式、内模式
A.正确
B.错误
[判断题]客户经理可以私自办理信贷客户保险代理业务。
A.正确
B.错误
[判断题]线路车间(机械化维修车间)应根据工务段下达的年度分月维修计划和各项养护任务,编制月度维修计划。( )
A.正确
B.错误
[多选题]喷焊粉末按基础材料可分为()合金粉末。
A.钴基
B.镍基
C.铜基
D.铁基
[单项选择]帮助生活不能自理老人进食时应注意()。
A. 尽量让老人取卧位
B. 喂食速度应缓慢
C. 喂食时以汤匙的三分之二食物为宜
D. 尽量避免少食多餐
[多项选择]固定资产原值由()组成。
A. 工程费用
B. 预备费
C. 工程建设其他费用
D. 建设期利息
[多选题]下列属于室内变压器施工前现场检查内容的是( )。
A.本体及附件外观检查无损伤及变形,油漆完好且油箱封闭良好,无漏油、渗油现象,油标处油面正常
B.800kVA及以上油浸变宜配瓦斯保护。瓦斯继电器合格证齐全,无渗漏,方向标示清晰准
C.带有防护罩的干式变压器,防护罩与变压器的距离应符合标准的规定
D.土建标高、尺寸、结构及预埋件焊件强度均符合设计要求。
[单选题]卧式储罐的净容积与( )无关。
A. 封头高度C
B. 储罐半径R
C. 储罐长度L
D. 液面高度h
[单项选择]Aimlessness has hardly been typical of the postwar Japan whose productivity and social harmony are the envy of the United States and Europe. But increasingly the Japanese are seeing a decline of the traditional work-moral values. Ten years ago young people were hardworking and saw their jobs as their primary reason for being, but now Japan has largely fulfilled its economic needs, and young people don’’t know where they should go next.
The coming of age of the postwar baby boom and an entry of women into the male-dominated job market have limited the opportunities of teen-agers who are already questioning the heavy personal sacrifices involved in climbing Japan’’s rigid social ladder to good schools and jobs. In a recent survey, it was found that only 24.5 percent of Japanese students were fully satisfied with school life, compared with 67.2 percent of students in the United States. In addition, far more Japanese workers expressed dissatisfaction with their jobs than did their count
A. Women’’s participation in social activities is limited.
B. More workers are dissatisfied with their jobs.
C. Excessive emphasis has been placed on the basics.
D. The life-style has been influenced by Western values.
[填空题]合金钢组合辙叉的垂直磨耗比照_办理,其他伤损比照钢轨轻重伤标准办理。
[单选题]金属表面涂层保护的方法只有电镀。
A.对
B.错
[单项选择]关于结构化病案,下列叙述错误的是()。
A. 易于实行计算机管理
B. 实际上是指一种计划好的表格病历
C. 只适用一些为"既定性信息"的记录
D. 同类信息的比较几乎不可能
E. 医务人员易受表格的限制
[判断题]会计科目代码结构是指代码共有多少个以及各级代码的长度。( )
[单选题]由于经办人员、营业机构等提供情况不实,导致决策失误,造成不良后果,经办人员或提供情况的单位或部门的主要负责人为( )。
A.直接责任人
B.间接责任人
C.领导责任人
D.管理责任人
E.其他责任人
[填空题]化瘀消肿剂药名:()功效:活血散瘀,消肿止痛主治:跌打损伤,瘀血肿痛。
[简答题]哪些芳香化湿药兼有解表、行气、温中的作用
[单选题]电缆热缩终端头制作时,削切安装电缆线端子的导体长度一般为孔深+( )mm。
A.8;
B.7;
C.6;
D.5
[单项选择]栀子的功效是()
A. 清肺润燥
B. 退热除蒸
C. 凉血解毒
D. 清热安胎
E. 清肝明目
[单项选择]下列关于惯性的说法,正确的是()
A. 静止的物体才具有惯性
B. 做变速运动的物体没有惯性
C. 两个物体质量相等,则它们的惯性大小相等
D. 有的物体没有惯性
[判断题]企业开出的带息商业承兑汇票,应于期末计提利息,增加应付票据的账面余额,同时确认为财务费用。 ( )
[单选题]对于密封圈等橡胶制品可用( )清洗。
A.水
B.汽油
C.清洗剂
D.酒精
[多选题]以直观形式带给学生直接经验的教学方法有()
A.讲授法
B.演示法
C.教学法
D.参观法
[单项选择]对直径100mm的圆钢棒用直接通电法进行连续法周向磁化时,为使圆棒柱面的磁场强度达到20Oe,其磁化电流为()。
A. 250A
B. 500A
C. 1000A
D. 以上都不对
[单项选择]
In the United States, 30 percent of the adult population has a "weight problem". To many people, the cause is obvious: they eat too much. But scientific evidence does little to support this idea. Going back to the America of the 1910s, we find that people were thinner than today, yet they ate more food. In those days people worked harder physically, walked more, used machines much less and didn’t watch television.
Several modern studies, moreover, have shown that fatter people do not eat more on the average than thinner people. In fact, some investigations, such as the 1979 study of 3,545 London office workers, report that, on balance, fat people eat less than slimmer people.
Studies show that slim people are more active than fat people. A study by a research group at Stanford University School of Medicine found the following interesting facts: The more the men ran, the more body fat they lost.
The more they ran, the greater amount of food
A. Yes, there is plenty of evidence.
B. Of course, there is some evidence to show this is true.
C. There is hardly any scientific evidence to support this.
D. We don't know because the information is not given.
[判断题] 露天堆垛火灾一般灭火持续时间长,灭火用水量大。( )
A.正确
B.错误
[多选题]COPD患者稳定期的治疗包括
A. 健康教育
B. 长期家庭氧疗
C. 支气管扩张剂
D. 祛痰药
[单选题]允许速度为120km/h(不含)~160km/h的线路,在直线上顺坡的超高不得大于(??? )mm。
A.8
B.10
C.15
D.25
[单选题]奥氏体不锈钢压力容器水压试验对水的要求为水中氯离子含量小于( )PPM。
A.25
B.30
C.35
D.40