热门试题:
[单选题]（JB-EG01）含蜡原油中蜡晶开始析出的温度，称为（ ）。(0.5分)
A.:析蜡点
B.:反常点
C.:显触点
D.:失流点
[判断题] 正反馈主要用于振荡电路,负反馈主要用于放大电路( )。
A.正确
B.错误
[判断题]电力线上某点的切线方向与该点电场强度方向相反。( )
A.正确
B.错误
[多选题]一个大中型生产性项目所需的物资品种繁多、数量大，一般可分为( )等。
A.主要材料
B.地方材料
C.辅助材料
D.备品备件
E.特殊材料
[单选题]( )时，应对轨缝进行调整。
A.25m钢轨地段每千米总误差为60mm
B.线路爬行量为15mm
C.12.5m钢轨地段出现1个瞎缝
D.12.5m钢轨地段出现连续2个轨缝大于构造轨缝
[多选题]所谓双变换是指UPS正常工作时，电能经过了（ ）两次变换后再供给负载。
A.AC/DC
B.AC/AC
C.DC/AC
D.DC/DC
[不定项选择题]资料：What attracts customers? Obviously the quality of a product does, but visual images contribute a great deal. It is not only the image provided by the packaging that counts but the whole corporate identity of the company.
There are now many products and services on the market which are similar in content though produced by different companies. It is vital, therefore, for a company to distinguish itself from its competitors by having a strong company image which is immediately recognizable.
Logos are part of this image. They are symbols which often include a name or initials to identify a company. The logo establishes a visual identity for the company, just as different groups of young people express their identity through hairstyles and clothes. All groups from all cultures and throughout the ages have used colors and symbols to show their identity.
In different cultures, different colors carry different meanings. Some colors may be connected with coldness in one culture and with warmth in another; some colors represent life in one culture but death in another. International companies have, therefore, to make sure that their logos will not be misunderstood or misinterpreted in different countries.
Many companies have, over the years, renewed their logos to fit in with contemporary design and to present more powerful images. Company logos can be emotive and can inspire loyalty by influencing the subconscious. Some logos incorporate an idea of the product; and a case in point is the steering wheel in the Mercedes logo, for example, and the airplane tail of Alitalia.
Logos are used on letterheads, packaging and brochures as well as on the product itself. They may also appear in newspapers or on television as part of an advertising campaign.
Companies need to have a strong corporate identity. The logo helps to promote this image and to fix in the minds of the consumers. Logos, therefore, need to be original and to have impact and style.
You probably find a logo of a big company____.
A.on the letterheads and packages
B.in the social media platform
C.advertisements on TV
D.All of above
[多选题]一炮三检是指瓦斯隧道钻爆作业应在( )由瓦检员检测爆破地点的瓦斯浓度。
A.装药前
B.爆破前
C.装药中
D.爆破后
[判断题]线路验电时应戴绝缘手套。
A.正确
B.错误
[单选题]在电气化区段,严禁()机车、车辆等车顶部或翻越车顶通过线路。在线路上作业时,禁止接打移动电话。
A.攀登
B.靠近
C.翻越
[判断题]危险化学品专用仓库，应当符合国家标准对安全、消防的要求，设置明显标志。
A.正确
B.错误
[简答题]说明万用电表上零欧姆调零旋钮的用途及操作。
[不定项选择]肾病综合征时可伴有哪些血浆蛋白成分下降（）
A. 白蛋白
B. 砖铁蛋白
C. IgG
D. 多种内分泌结合蛋白
[多选题] 通常电气设备做的绝缘试验项目有( )。[1.0分]
A. 交流耐压试验
B. 介质损耗角正切值的测量
C. 直流泄漏电流的测量
D. 直流耐压试验
E. 短路试验
F. 绝缘电阻和吸收比测量
[单选题]设备解体检修前，应对SF6气体进行检验。根据有毒气体的含量，采取安全防护措施,检修人员需着防护服并根据需要配戴()。
A.防毒面具
B.防护面具
C.口罩
D.护目镜
[单选题]空管语音通信交换系统可靠性应大于( )
A.0.99998
B.0.999
C.0.99999
D.0.9999
[单选题]安全生产标准化评审分为（ ）级。
A.一
B.二
C.三
[单项选择]中毒的主要机理有( )
A. 麻醉作用
B. 缺氧
C. 局部刺激、腐蚀作用
D. 以上都是
E. 抑制酶的活力
[单项选择]用平均发展速度减1得到的指标是（）。
A. 发展水平
B. 增长量
C. 发展速度
D. 平均增长率
[多项选择]肺叶不张的CT表现，不包括哪些（）
A. 胸廓变小
B. 肺体积收缩
C. 纵隔向健侧移位
D. 叶间胸膜移位
E. 同侧膈肌下降
[多选题]通信检修管理工作遵循( )的原则。
A.统一管理
B.逐级审批
C.分级负责
D.规范操作
E.略
F.略
[判断题]BF001蒸汽发生器安全阀应至少每半年进行1次整定和校验。( )
A.正确
B.错误
[判断题]夜间高处作业或现场光线不足时，现场必须有充足照明。（）
A.正确
B.错误
[判断题]间接带电作业前，由工作领导人指定安全等级不低于四级的作业组成员作为要令人员向供电调度申请作业命令。
A.正确
B.错误
[单选题]超声波物位计在进行物位测量时一般要求测量介质哪个物理量差异大（ ）
A. 杨氏模量
B. 温度
C. 介电常数
D. 密度
[单选题]触电急救脱离电源，就是要把触电者接触的那一部分带电设备的（）断路器（开关）、隔离开关（刀闸）或其他断路设备断开；或设法将触电者与带电设备脱离开。
A.有关
B.所有
C.高压
D.低压
E./
F./
[单选题]公称压力大于1.6MPa,且小于4.0MPa,公称直径小于200㎜的埋地输气管线与特殊的建筑物.特殊的防护地带.炸药及爆炸危险品仓库.军事设施等的最小安全防火距离应为( )。
A.100m
B.80m
C.150m
D.大于200m并与有关单位协商确定
[单选题]下列有关国家审计法律责任的表述中，正确的是 :
A.以民事责任为主
B.以刑事责任为主
C.以赔偿责任为主
D.以行政责任为主
[单项选择]租赁机械设备必须执行租赁合同（）制度。合同签订的主体原则上是子公司或经子公司授权的项目部。租赁合同必须按公司租赁合同范本，由项目部负责拟定和评审，并报（）审批。严禁先使用后申请，或先使用后签订合同。
A. 审批；公司
B. 审批；子公司
C. 评审；公司
D. 评审；子公司
[单项选择]（）提出“生活即教育”。
A. 罗素
B. 陶行知
C. 杜威
D. 加涅
[单选题]要充分利用好国家在安全生产和应急救援方面的投入政策,管好用好资金,坚持(),充分发挥投资效益。
A.利旧与新建并重原则
B.建设与节约并重原则
C.节约办事原则
[填空题] Perhaps, every county suffered from inflation once or more times. Inflation is an economic condition in (B1) prices for consumer goods (B2) , and the (B3) of money or purchasing power decreases. There are three causes of inflation. The first and most important cause may be excessive government spending. For example, in order to (B4) a war or carry (B5) social programs, the government may spend more money than it has received through taxes and other revenues, thus creating a deficit. In order to (B6) this deficit, the Treasury Department can simply (B7) the money supply by issuing more paper money to (B8) the debts of government. This increase in the money supply will cause the value of the dollar to (B9) decrease. The second cause of inflation occurs when the money supply increases faster than the supply of goods. (B10) people have more money, they will run out to buy popular goods (B11) televisions and computers, for example, and a shortage
A. A．mend
B．meet
C．respond
D．return
[单选题]肝癌结节破裂出血可引起
A.黄疽加深
B.腹部剧痛
C.食欲减退
D.高热不退
E.呕血不止
[单选题]( )是指食用各种被有毒有害物质污染的食品后发生的急性疾病。
A.职业病
B.呕吐
C.食物中毒
D.腹泻
[判断题]省营销服务中心协助省公司营销部开展能效公共服务管理，做好省级智慧能源服务平台运营工作。
A.正确
B.错误
[单项选择]某鸡场4 周龄鸡出现咳嗽气喘、流鼻液症状。分泌物经0.45μm 滤膜过滤后接种牛心浸出液琼脂培养基，7 天后可见露珠状小菌落。该鸡群感染的病原可能是
A. 鸡毒支原体
B. 产气荚膜梭菌
C. 多杀性巴氏杆菌
D. 支气管败血波氏杆菌
E. 产单核细胞李氏杆菌
[单选题]以下哪些传输方式不可以在BTS和BSC之间使用（）
A.E1/T1
B.GE
C.FE
D.高速电缆
