热门试题:
[单选题]P-1102泵暖泵时，应该先开()
A.入口跨线阀
B.入口阀
C.出口阀
[简答题] I once knew a dog named Newton who has a unique sense of humor. Whenever I tossed out a Frisbee (飞碟) for him to chase, he’’d take off in hot pursuit but then seem to lose track of it. Moving back and forth only a yard or two from the toy, Newton would look all around, even up into the trees. He seemed genuinely puzzled. Finally, I’’d give up and head into the field to help him out. But no sooner would I get within 10 ft. of him than he would run invariably straight over to the Frisbee, grab it and start running like mad, looking over his shoulder with what looked suspiciously like a grin.
Just about every pet owner has a story like this and is eager to share it with anyone who will listen. On very short notice, TIME reporters came up with 25 stories about what each is convinced is the smartest pet in the world. Among them: the cat who closes the door behind him when he goes into the bathroom; the cat who uses a toilet instead of a litter box... and flushes it afterward; the do
[单选题] 测量设备的绝缘电阻应该用( )。
A.欧姆表
B.万用表
C.兆欧表
D.电桥
[单项选择]确定城市性质的关键是( )。
A. 分析城市在区域中的地位及其发挥的主要作用
B. 分析城市的产业结构
C. 分析城市发展的优势和制约条件
D. 分析城市社会经济发展战略的任务与目标
[多选题]用电平表测量电平的方法有（ ）。
A.串联法
B.跨接法
C.终端法
D.并联法
[单选题]正常人瞳孔直径为
A.1~2mm
B.2~5mm
C.3~6mm
D.5~7mm
E.7mm 以上
[判断题]两台及以上机车在车站调车作业时，无线调车灯显设备禁止共用同一频率。
A.正确
B.错误
[填空题]由于制造工艺的关系，不能把理论尖端制造出来，实际上的尖端有6～10mm宽，称为辙叉( )。
[单选题]《铁路乘车证管理办法》规定，软席全年定期、软席乘车证为()。
A.浅绿色
B. 浅粉色
C.浅蓝色
D.浅黄色
[单选题]创业投资者包含创业投资者的股权参与，具体包括直接购买（ ）等方式。
Ⅰ.股票
Ⅱ.认股权证
Ⅲ.可转换债券
Ⅳ.指数成分股
A.Ⅱ.Ⅲ.Ⅳ
B.Ⅰ.Ⅱ.Ⅳ
C.Ⅰ.Ⅱ.Ⅲ
D.Ⅰ.Ⅲ.Ⅳ
[单选题]使用非法印制、伪造、涂改、倒卖、出租、出借
《特种设备作业人员证》的，处 （ ）以下罚款；
构成犯罪的，依法追究刑事责任。
A.500 元
B.1000 元
C.3000 元
[判断题]很多液体不溶于水,如果用水扑救会导致蒸气加速蒸发,或形成流淌火造成火势蔓延。
A.正确
B.错误
[单项选择]
Text 4
Although, recent years have seen substantial reductions in noxious pollutants from individual motor vehicles, the number of such vehicles has been steadily increasing. Consequently, more than 100 cities in the U. S. still have levels of carbon monoxide, particulate matter, and ozone that exceed legally established limits. There is a growing realization that the only effective way to achieve further reduction in vehicle emissions—short of a massive shift away from the private automobile—is to replace conventional diesel fuel and gasoline with cleaner-burning fuel such as compressed natural gas, liquefied petroleum gas, ethanol, or methanol.
All of these alternatives are carbon-based fuels whose molecules are smaller and simpler than those of gasoline. These molecules burn more cleanly than gasoline, in part because they have fewer, if any, carbon-carbon bonds, and the hydrocarbons they do emit are less likely to generate ozone. The combust
A. Further attempts to reduce emission from gasoline-fueled vehicles will not help lower urban air-pollution level.
B. Attempts to reduce the pollutants that an individual gasoline-fueled vehicle emits have been largely unsuccessful.
C. Few serious attempts have been made to reduce the amount of pollutants emitted by gasoline-fueled vehicles.
D. Pollutants emitted by gasoline-fueled vehicles are not the most critical source of urban air pollution.
[多项选择]下列机组哪些是电力系统的调峰电源？（）
A. 常规水电机组
B. 燃气轮机机组
C. 核电机组
D. 汽轮发电机组
[填空题]短时间退出防误操作闭锁装置，由( )批准，并应按程序尽快投入。
[单选题]《党章》规定，党组织如果在( )失职，必须受到追究。
A.任用干部方面
B.完成工作任务方面
C.科学决策方面
D.维护党的纪律方面
[填空题]备课的细节各科教学尽管有所不同，但备课必须都要做好的三方面工作是（）、（）、（）。
[判断题]道岔是轨道的重要组成部分，它可以使机车车辆在同一平面由一条线路转入或越过另一条线路。
A.正确
B.错误
[单项选择]化工生产中强化职业责任是（）职业道德规范的具体要求。
A. 团结协作
B. 诚实守信
C. 勤劳节俭
D. 爱岗敬业
[单选题]再生系统进行冷停车,是为了防止燃烧区中的炭分布在停车期间被打乱,需要将催化剂循环速率设为( )。
A.0%
B.5%
C.50%
D.保持原设置速率
[单选题] 易燃易爆及有毒有害物品库房须建立严格的__________制度,设专人验收、管理,做到账物相符。
A.安全评估
B.风险管理
C.出入库管理
D.人员管理
[单项选择]先天缺失或错位萌出的牙，常见的是（）
A. 上颌中切牙
B. 下颌第二乳磨牙
C. 上颌第三磨牙
D. 下颌中切牙
E. 上颌第二前磨牙
[判断题]电梯终端限位保护是指轿厢在上下端站越位时通过电气系统实现强迫减速、切断动力电源的二级保护
A.正确
B.错误
[单项选择]患者男性，17岁，接触油漆后喘息1天，伴少量白痰，有变应性鼻炎史2年。查体：双肺广泛哮鸣音，诊为支气管哮喘急性发作，治疗应首选
A. β2受体激动剂
B. 糖皮质激素
C. 抗胆碱能药物
D. 茶碱类
E. 肥大细胞膜稳定剂
[单选题]基建工地施工用电(包括施工照明)可供给临时电源。
A.对
B.错
[简答题]某市B区冻肉厂被处于A区的市卫生局委托的人员组成的负责B区卫生检查的卫生检查队现场查出5吨不符合卫生质量标准的猪肉，卫生检查队便以市卫生局的名义对该厂罚款1万元，市卫生局知情后，对该冻肉厂做出责令停业1个月的处罚决定。因事实清楚，证据确凿，冻肉厂要求举行听证的要求被驳回。冻肉厂不服，便以卫生检查队和市卫生局为被告向B区人民法院提起行政诉讼。有管辖权的法院对此案应当做出怎样判决？为什么？
[判断题]水泵控制箱保养不需要关闭电源。（ ）
A.正确
B.错误
[单选题]患者,男性,32岁。因车祸造成胸部严重创伤,肋骨骨折,有反常呼吸,现场应 (1分.)
A.行胸外心脏按压
B.鼓励患者咳嗽
C.行人工呼吸
D.用布条包扎伤口
E.用厚棉垫加压包扎
[单选题]为防止串联谐振过电压烧损电压互感器，倒闸操作时，( )使用带断口电容器的断路器投切带电磁式电压互感器的空母线。
A.宜
B.不宜
C.严禁
D.只允许
