热门试题:
[单选题]静水压力释放器的定期检修间隔期限不得超过( )个月,如不可行时,主管机关可展期至( )个月。( )
A.. 18、24
B. 12、17
C.12、18
D. 18、20
[填空题]我厂220V直流在联络开关与蓄电池进线开关上有闭锁,防止在两台机220V蓄电池组（）运行。
[填空题]YB65型条盒包装机在通道顶部装有毛刷,毛刷给输入的双层烟包的顶部逐渐增加一定的( ),使烟包在通道中运行时不会随便移动并能保持准确的位置
[单项选择]停电时，要分别将馈电柜负荷开关置于（）位，切断用户负荷，按（）按钮断开电源低压断路器。
A. 垂直 分闸
B. 水平 分闸
C. 垂直 合闸
D. 水平 合闸
[判断题]饮酒后驾驶机动车的,不得申请增加大型客车、牵引车、中型客车准驾车型。
A.正确
B.错误
[单选题]磨煤机停止延时（）分钟，磨煤机减速机油泵联锁停止。
A.5
B.10
C.20
D.35
[单项选择]
Few creatures on earth are as cute as the black lion tamarin, and few have as dramatic a story line. Pug-nosed and diminutive, with a comic fringe of hair, these monkeys dwell in trees in small tracts of forest in southeastern Brazil. Or they did until 1905, when they were declared extinct. No one saw a black lion tamarin again in the wild until 1970. Later, in the 1990s, some Brazilian researchers turned up a small set of isolated, inbred populations scattered over a wide region. Since that time, they have been engineering tamarin migration, doing everything they can to save the world’s most distinctive primates.
Although they are no larger than house cats, tamarins have brains big for their size and a family life organized like our own. They live in groups anchored by an adult male andadult female, along with their offspring. When a mother bears young, she usually produces twins, and although members of the group share in their upbringing, it is most often the fat
A. The trees in the new forest were in different size.
B. The insects in the new forest had a different taste.
C. Tamarins could get used to the new environment.
D. Above 80% of tamarins survived.
[单选题]距（ ）30米内不准停车。
A.消防队门前
B.铁路道口
C.交叉道口
[单选题]1.120.第120题根据596-2012,测量日计时误差,需连续测量()次,取其算术平均值
A.10;
B.2;
C.5;
D.3.0
[单选题]空气制动机是指利用（ ）作为制动动力来源，以制动主管的空气压力变化来控制分配阀产生动
A.压缩空气
B.杠杆传动比
C.人力
D.摩擦力
[单选题]变压器中性点及外壳接地应接触良好，连接牢固可靠，工作接地电阻不得大于（）。
A.4
B.5
C.10
D.30
E./
F./
[多项选择]甲向乙借款，丙与乙约定以自有房屋担保该笔借款。丙仅将房本交给乙，未按约定办理抵押登记。借款到期后甲无力清偿，丙的房屋被法院另行查封。下列哪些表述是正确的？（）
A. 乙有权要求丙继续履行担保合同，办理房屋抵押登记
B. 乙有权要求丙以自身全部财产承担担保义务
C. 乙有权要求丙以房屋价值为限承担担保义务
D. 乙有权要求丙承担损害赔偿责任
[单选题]妈妈给小青11.1元，让他去买5斤香蕉、4斤苹果，结果他把买的数量给弄颠倒了，从而剩下0.6元。那么苹果每斤的售价是多少元？( )
A.0.9
B.0.7
C.0.8
D.1
[单项选择]描述色谱柱效能和总分离效能的指标分别是（）。
A. 理论塔板数和保留值
B. 理论塔板数或理论塔板高度和分离度
C. 分离度或有效塔板高度
D. 理论塔板高度和理论塔板数
E. 有效塔板高度和保留值
[单选题] (单选题, 3.9分) 下述哪一特性是病毒特有的
A.专性细胞内寄生
B.具有滤过性
C.无细胞壁结构
D.二分裂方式
E.只含一种类型核酸
[判断题] 含VOCs产品的使用过程中,应采取废气收集措施,提高废气收集效率,减少废气的无组织排放与逸散,并对收集后的废气回收或处理后达标排放。
A.正确
B.错误
[判断题]银行业金融机构涉假冠字号码查询受理单位应向查询申请人以_____形式反馈查询结果。（ ）
A.正确
B.错误
[判断题]公司分类的目的是对公司进行相应的法律规范和调整。
A.正确
B.错误
[简答题]
某企业负债总额为25万元，负债的年平均利率8%，权益乘数为2。全年固定成本总额18万元，年税后净利润7.5万元。所得税税率25%。
计算该企业息税前利润总额。
[多项选择]发生地震，如果自己已经被埋在了废墟下面，千万不要惊慌。要头脑冷静，先用手保护好（），以免受伤和让灰土进入呼吸道。
A. 头部
B. 鼻子
C. 嘴巴
D. 眼睛
[单选题]在线电压380V的接地系统中,一般要求工作接地电阻不超过( )Ω。
A.16
B.12
C.4
[单选题]运行时间超过 ( )年的避雷器,宜采取轮试方式进行抽检试验。
A.2~3
B. 3~5
C. 4~7
D.5~10
[填空题]（）中嫡翊兮秋风洞庭波兮木叶下是写景的妙句。
[单项选择]下列有关选择定期献血者的叙述不正确的是：（）
A. 避免某种血型的过多与不足
B. 定期检查身体知道身体的重要性以及危害身体的因素
C. 能够很好的配合工作快速抽血
D. 帮助宣传献血知识，扩大社会认知程度
[单选题]拉线绑扎回头采用一字绑扎时绑扎的长度误差为( )。
A.±10mm
B.+10mm
C.±20mm
D.+20mm
[单项选择]I don't think it is any use ______ this matter any further.
A. discussing
B. to discuss
C. to discussing
D. to be discussed
[单选题]张明的家离学校4千米，他每天早晨骑自行车上学，以20千米／时的速度行进，恰好准时到校。一天早晨，因为逆风，他提前0.2小时出发，以10千米／时的速度骑行，行至离学校2.4千米处遇到李强，他俩互相鼓励，加快了骑车的速度，结果比平时提前5分24秒到校。他遇到李强之后每小时骑行多少千米？( )
A.16
B.18
C.20
D.22
[单选题]使用开放式问题收集资料的优点是
A.准确无误
B.拒答率低
C.问卷回收率高
D.能收集到详细生动的资料
[单项选择]探诊慢性溃疡性牙髓炎患牙的龋洞为
A. 洞底硬，不敏感
B. 洞内探穿髓孔痛
C. 洞内有肉芽组织
D. 洞底大量软腐质
E. 以上无一项正确
[单项选择]预测的基本程序包括：①修正预测结果；②分析评价预测结果；③选择预测方法，建立预测模型；④收集分析资料：⑤确定预测目标。正确的排列顺序为( )。
A. ④—③—⑤—②—①
B. ①—③—⑤—④—②
C. ⑤—④—③—②—①
D. ①—②—③—④—⑤
[单选题]车站值班员无需向司机、运转车长转达或交付的调度命令是( )。
A.单机附挂车辆
B.货物列车违反列车编组计划
C.恢复双线行车
D.恢复原行车闭塞法
[多选题]以下物资哪些属于重点物资？（）
A.军事运输物资
B.关系国家经济发展和社会稳定的调运物资
C.国家抢险救灾
D.应急救援
[单项选择]The mid-sixties saw the start of a project that, along with other similar research, was to teach us a great deal about the chimpanzee mind. This was Project Washoe, conceived by Trixie and Allen Gardner. They purchased an infant chimpanzee and began to teach her the signs of ASL, the American Sign Language used by the deaf. Twenty years earlier another husband and wife team, Richard and Cathy Hayes, had tried, with an almost total lack of success, to teach a young chimp, Vikki, to talk. The Hayes*s undertaking taught us a lot about the chimpanzee mind, but Vikki, although she did well in IQ tests, and was clearly an intelligent youngster, could not learn human speech. The Gardners, however, achieved spectacular success with their pupil, Washoe. Not only did she learn signs easily, but she quickly began to string them together in meaningful ways. It was clear that each sign evoked, in her mind, a mental image of the object it represented. If, for example, she was asked, in sign language
A. some animals do have intelligence to some extent
B. chimps can be taught to use human language if enough time is given
C. chimps can even give some particular signs to express what they want
D. chimps can be as creative as human beings
[判断题]在二次接线回路上工作,无需将高压设备停电时应使用第一种工作票。( )
A.正确
B.错误
[单项选择]KVL定律体现了（）。
A. 质量守恒
B. 电压守恒
C. 电荷守恒
D. 能量守恒
[单项选择]竹茹具有的功效是（）
A. 燥湿化痰，降逆止呕
B. 消痰行水，降逆止呕
C. 清化热痰，除烦止呕
D. 化痰止咳，和胃降逆
E. 温肺止咳，和胃止呕
[判断题]变形区是指轧件与轧辊接触开始至轧件离开轧辊的一段区域。
A.正确
B.错误
