热门试题:
[单选题]某化工企业配电室着火,经确认是一台600V开关箱发生火灾。着火事件已较长,此时如利用灭火器灭火,应选用的灭火器是( )
A.泡沫灭火器
B.干粉灭火器
C.1211灭火器 D 二氧化碳灭火器
[单项选择]小儿开始能独坐的月龄是（）。
A. 3个月
B. 4个月
C. 5～7个月
D. 8～10个月
E. 10～12个月
[判断题]消防救援人员严禁在营区厨房、车库和档案室等场所喝酒。（ ）
A.正确
B.错误
[判断题]动火期间动火地点附近的水源要保证充足，可以中断。
A.正确
B.错误
[单选题]负极预分切机分切后的极片宽度应该控制在（）。
A.452±0.5mm
B.452±0.6mm
C.452±0.7mm
[单选题]收银员是商家的一个对外形象,从某种总义上说,收银员( )的高低,决定着顾客的多少,决定着商家的生存与发展。
A.素质
B.文化水平
C.颜值
D.技能水平
[多选题]晶体三极管具有( )三个工作区。
A.截止区
B.导通区
C.放大区
D.饱和区
[单项选择]城市人防工程的人员掩蔽所距人员工作生活地点不宜大于( )。
A. 70m
B. 100m
C. 150m
D. 300m
[填空题]调车作业时,调车人员必须正确及时地显示信号;机车乘务人员要认真确认信号,并( )。 J291
[单项选择]
A. nationwide
B. worldwide
C. regional
[单项选择]
As one works with color in a practical or experimental way, one is impressed by two apparently unrelated facts. Color as seen is a mobile, changeable thing (1) to a large extent on the relationship of the color (2) other colors (3) simultaneously. It is not (4) in its relation to the direct stimulus which (5) it. On the other hand, the properties of surfaces that give (6) to color do not seem to change greatly under a wide variety of illumination color, usually (but not always) looking much the same in artificial light as in daylight. Both of these effects seem to be (7) in large part to the mechanism of color (8) .
When the eye is (9) to a colored area, there is an immediate readjustment of the (10) of the eye to color in and around the area (11) . This readjustment does not promptly affect the color seen but usually does affect the next area to which the (12) is shifted. The longer the
A. efficient
B. parallel
C. relative
D. respective
[判断题]判断题事故调查报告报送负责事故调查的人民政府后,事故调查工作即告结束。()
A.正确
B.错误
[单选题]工作任务积分主要以（ ）为度量单位进行累计积分。
A.工分$
B.$积分标准$
C.$数量$
D.$质量
[单项选择]零件在热处理后要有较高的强度和硬度，并且要求（）。
A. 变形量最小
B. 韧性好
C. 刚性好
D. 不变形
[判断题]《消防法》规定,禁止在具有火灾、爆炸危险的场所吸烟、使用明火。因施工等特殊情况需要使用明火作业的,应当按照规定事先办理审批手续,采取相应的消防安全措施;作业人员应当遵守消防安全规定。( )
A.正确
B.错误
[单选题]发生火灾时,干式喷水灭火系统中干式报警阀靠( )开启。
A.火灾探测器
B.洒水喷头
C.火灾报警控制器
D.压力开关
[单项选择]原始口腔形成于（）
A. 胚胎第6周末
B. 胚胎第4周
C. 胚胎第10周
D. 胚胎第6～7周
E. 胚胎第7～8周
[判断题]不当得利之债的债权一般只以受益人取得的实际利益为限，而不以赔偿受损人所受损失为标准。( )
[单选题]根据《招标投标法实施条例》，招标人以不合理条件限制、排斥潜在投标人或投标人的情形是（ ）。
A.授意投标人撤换.修改投标文件
B.明示或者暗示投标人为特定投标人中标提供方便
C.限定或指定特定的专利.商标.品牌.原产地或者供应商
D.明示或者暗示投标人压低或者抬高投标报价
[单项选择]关于一氧化碳中毒神经系统后发症的叙述错误的是（）
A. 未出现意识障碍者一般无神经精神症状
B. 神经精神症状可发生在中毒数周后
C. 神经精神症状与中毒昏迷时间无关
D. 常常伴智能障碍
E. 神经精神症状突然发生、逐渐加重
[单选题]当公务电话无法使用时,首先检查()。( )
A.电话线有没有被拔出
B.电池是否有电
C.弱电间线缆是否松动
D.机房防雷是否损坏
[填空题]在整个管理系统和管理过程中，要把（）作为管理的根本目的和最终归宿。
[判断题]现场办理工作许可手续前，工作许可人应与工作票签发人核对线路名称、设备双重名称，检查核对现场安全措施，指明保留带电部位。
A.正确
B.错误
[单选题]进行人工呼吸和心脏按摩时,在以下 ( ) 情况下可以停止进行。
A.操作人员疲劳的
B.患者有一定反应
C.呼吸和心跳均得到充分恢复
[多选题]最能体现动态性变化特征，并且在工程价格的市场机制中起重要作用的工程造价信息包括（）。
A.消耗量定额
B.价格信息
C.工程造价指数
D.计价文件
E.已完工程信息
[判断题] ( ) 调车人员调动车辆经过煤台、信号机、道岔表示器等设备或较远的建筑物时，不准探身过远。（ ）
A.正确
B.错误
[单项选择]在高级计算机语言中，4GL是（）。
A. 基础语言
B. 非过程化语言
C. C语言
D. 结构化程序语言
[填空题] Questions 47 to 56 are based on the following passage.
Vegetarianism is the theory or practice of living solely upon vegetables, fruits, grains, and nuts—with or without the (47) of milk products and eggs — generally for ethical, environmental or (48) reasons. All forms of flesh (meat, fowl, and seafood) are (49) from all vegetarian diets, but many vegetarians use milk and milk products.
In the early 21st century, vegetarianism has become decidedly mainstream. The number of vegetarians is difficult to determine, but a 2006 (50) of 1,000 U.S. adults by the Vegetarian Resource Group found that 6.7 percent of respondents never ate meat, and 1.4 percent of those were vegan. A British survey the same year found that 12 percent of respondents called themselves "vegetarian". Many of today vegetarians came to the practice because they (51) with sentiments about the immorality of eating animals who suffered to bec
[单项选择]锅炉转杯式喷油器所带风机的供风起（）作用。
A. 雾化燃油
B. 防止油高温缺氧产生炭黑
C. 供应燃烧所需大部分空气
D. A和B
[单项选择]托运人根据买卖合同和信用证的有关内容向承运人办理货物运输的书面凭证是（）。
A. 装货清单
B. 托运单
C. 大副收据
D. 提单
[判断题]二次回路通电试验时，为防止由二次侧向一次反电压，除将二次回路断开外，还应取下一次熔断器。
A.正确
B.错误
[单选题]ZYJ7转辙机（ ）太大，会造成道岔4mm锁闭，道岔不能正常解锁，转辙机电机空转等，使转换设备发生故障。
A.牵引力
B.拉力
C.密贴力
[单项选择]A CFA charterholder agreed in writing with his former employer not to solicit former clients for a period of one year after his termination. After he left his former employer, he consulted with a lawyer about whether the agreement was legally enforceable. The lawyer advised that it was doubtful that the agreement could be enforced, so the charterholder sent marketing brochures about his new firm to his former clients. According to the Standards of Practice Handbook, which of the following statements is most accurate with respect to the charterholder’s conduct（）
A. The Standards do not apply to the charterholder’s conduct.
B. The Standards require the charterholder to comply with the agreement with his former employer.
C. Because the charterholder relied upon the opinion of legal counsel, he did not violate the Standards.
[多选题]如果发生意外螺旋，使用下列哪些程序改出飞机（）。P3-30 *
A.收油门至慢车位
B.副翼置于中立位
C.向旋转方向相反的方向蹬满方向舵并保持住
D.前推驾驶杆
E.加满油门
F.以上均正确
[判断题]开车前列车长接到车站客运值班员通知后，确认旅客上下完毕，按规定通知乘警关闭车门。
A.正确
B.错误
[单选题] 过流保护加装复合电压闭锁可以( )。
A.加快保护动作时间
B.增加保护可靠性
C.提高保护的灵敏性
D.延长保护范围。
[单选题] "在ATS战场图界面中信号机旁边的黄色三角图形显示代表()
A.该信号机为接近锁闭
B.该信号机设置自动进路
C.该信号机为始端的所有自动进路被允许
D.该信号机为始端的自动进路中至少一条被禁"
[单选题]交通事故的损失是由非机动车驾驶人、行人( )造成的，机动车一方不承担责任。
A.意外
B.过错
C.故意
