热门试题:
[单选题]使用折梯时，上部夹角宜为（ ），并确保梯脚有良好可靠的开度限制装置。
A.15º-30º
B.15º-35º
C.35°-45°
D.45º-60º
[判断题]调车人员在车列、车辆走行中，禁止1人及以上站在同一闸台、车梯及机车一侧踏板上。
A.正确
B.错误
[单选题]轴身有打痕、碰伤、磨伤及电焊打火深度不大于（ ）时加工或修理。
A.1mm
B.1.5mm
C.2mm
D.2.5mm
[单项选择]患者女性，35岁。1个月前因外伤手术输血800ml，近一周出现乏力，食欲减退，尿色加深。实验室检查：ALT200U／L，抗HCV（+），HCVPCR（+），抗HBc（+），诊断为（）
A. 急性丙型肝炎，既往曾感染乙型肝炎病毒
B. 慢性丙型肝炎
C. 乙型、丙型肝炎病毒合并感染
D. 急性乙型、丙型肝炎
E. 急性乙型肝炎
[单选题]下列哪项不是小儿呼吸系统的特点
A.喉头黏膜下组织疏松，易发生水肿
B.胸肺顺应性相对较高
C.呼吸道最狭窄处在声门
D.气管分叉角度两侧基本相同
E.气道阻力及肺阻力均大于成人
[单选题]液压传动系统由动力机构、执行机构、（ ）、液压传动管路、密封装置组成。
A.动力装置
B.回液管路
C.压力控制阀
D.控制装置
E.略
F.略
G.略
H.略
[单选题] 《水利部关于进一步加强水利生产安全事故隐患排查治理工作的意见》指出,水利生产经营单位()对本单位事故隐患排查治理工作全面负责。
A.各分管负责人
B.主要负责人
C.岗位人员
D.部门工区班组等负责人
[判断题]同一母线上有两台变压器，其中一台正常运行，另一台空载合闸，空载合闸变压器的励磁涌流处于峰值附近时，母线电压的瞬时值较低，此时不产生和应涌流。
A.正确
B.错误
[判断题]翻越障碍训练时,必须设置缓冲垫,在落点等处应当设置专人保护。( )(易)
A.正确
B.错误
[多选题]下列选项中符合队列纪律的是( )。
A.坚决执行命令,做到令行禁止
B.姿态端正,队容严整,精神振作,严肃认真
C.按照规定的位置列队,集中精力听指挥,动作迅速、准确协调一致
D.保持队列整齐,出、入列可以不用报告
[判断题][TW]BBA01 5 2 2
仪器操作间要求使用220V 50Hz的电源供电。( )
A.正确
B.错误
[单项选择]以下关于顺序存储结构的叙述中，( )是正确的。
A. 每个结点中至少包含一个指针域
B. 逻辑上相邻的结点物理上不必邻接
C. 可用于栈、队列、树等逻辑结构的存储表示
D. 插入、删除运算操作不方便
[单项选择]
A. Why
B. Who
C. Which
[单选题]下列关于四、二冲程柴油机的比较中属于四冲程机优点的是（）。
A.单位功率的质量轻
B.换气质量好
C.可以采用较小的飞轮
D.输出扭矩的均匀性较好
[单项选择]
The British work longer hours than anyone else in the European Union (EU), which may account for Britain’s faster rate of economic growth in the past decade. But the European Commission wants to put a stop to it. In a recent report it notes disapprovingly that, "the UK is the only member state where weekly working time has increased over the last decade." The commission believes that British companies may be systematically violating the EU’s "Working Time Directive". This demands that Europeans should work a maximum of 48 hours a week on average. Under the directive, workers can sign an "opt-out’, agreeing to work more than 48 hours. Some 33% of British workers have signed such opt-outs, although only 16% are believed actually to be working more than 48 hours.
Anna Diamantopoulou, the European commissioner for employment and social affairs, has a doubt about that. Firms in other European countries have not made much use of opt-ou
A. It firmly supports it.
B. It pays no attention to it.
C. It wants to get rid of it.
[判断题] 杆塔施工过程需要采用临时拉线过夜时,应对临时拉线采取加固和防盗措施。( ) (1.0分)
A.正确
B.错误
[单选题]阶梯试块的主要作用是测定钢轨探伤仪（ ）。
A.0°探头通道灵敏度余量和距离幅度特性
B.0°探头的灵敏度余量和楔内回波幅度
C.探头的声束宽度
D.0°探头通道距离幅度特性和楔内回波幅度
[单选题]触电急救中，当采用胸外按压进行急救时，要以均匀速度进行，每分钟（ ）左右，每次按压和放松时间要相等。
A.80次
B.100次
C.120次
D.85次
E.略
F.略
[单项选择]Visiting to an authentic (正宗的) Mexican restaurant is a good way to discover the richness of Mexican cuisine. To begin, you may order some tasty appetizers like cheese quesadillas. For the next course, you can’t miss a chicken chimichanga, which has a delicious, mild flavor. Another choice is a beef enchilada. Covered with spicy tomato sauce and topped with cheese, it will set your taste buds dancing.
To complete your Mexican meal, try a scoop of fried ice cream. Besides cooling you down, it will leave you wondering how the cook managed to deep fry the ice cream without melting it.
According to the passage, fried ice cream has NOT the function of ______.
A. cooling you down
B. reminding you of how the cook managed to deep fry the ice cream without melting it
C. setting your taste buds dancing
D. symbolizing the completion of your Mexican meal
[单选题]电焊机的外壳应可靠接地,接地电組不准大于( )欧姆。
A.3
B.4
C.5
D.6
[填空题]As they ______________________ (缺少人手), the villagers asked us to stay to help them.
[单项选择]女性，35岁，2个月来每于饭后1小时上腹疼痛。进食不缓解，呕吐后减轻。需做以下哪项检查有助于诊断（）
A. 腹部B超
B. 胃镜
C. 胃液分析
D. CT
E. 便隐血试验
[单选题]起动前、起飞前和起飞后检查单分为两部分： ＂线 上＂部分与＂线下＂部分。该格式设计有助于：
A.分清不同的飞行阶段
B.飞行机组管理工作负荷
C.飞行机组增强情景意识
[单项选择]眼球分为哪两部分（）
A. 角膜和巩膜
B. 视网膜和脉络膜
C. 眼球壁和眼内容物
D. 眼肌和眼内容物
E. 晶状体和玻璃体
[单选题]不属于安全联锁系统组成部分的是()。
A.数据传输单元
B.传感器单元
C.逻辑运算单元
[单选题]男,52岁,吸烟,20年前曾患右上肺结核已治愈,平素体健,近3个月来咳嗽,痰中带血,经抗炎对症治疗后症状好转,但胸片示右肺门旁3×3cm左右肿块影,边缘模糊,右肺尖有钙化,3次痰查癌细胞阴性。为确诊下列哪项检查最好?
A.再次痰查找癌细胞
B.经胸壁穿刺活检
C.支气管纤维镜检查
D.胸部CT
E.纵隔镜检查
[判断题]动力消耗是装卸机械单机当月燃料或电力的实际消耗数。
[单项选择]患者，女，34岁，心情抑郁不舒，失眠多梦，舌红，脉弦细，宜首选（）
A. 合欢皮
B. 首乌藤
C. 远志
D. 酸枣仁
E. 柏子仁
[单项选择]下列不属于操作系统功能的是
A. 进程管理
B. 存储管理
C. 作业管理
D. 数据库管理
[单项选择]先天性白内障引起的弱视属于（）
A. 斜视性弱视
B. 屈光参差性弱视
C. 屈光不正性弱视
D. 形觉剥夺性弱视
E. 先天性弱视
[填空题]The entertainment (26) , or "show business", attracts many young people. Unfortunately, only very few can hope to become famous and (27) . Talent is not enough, because show business is as (28) as any other business. Without a good manager, performers can never hope to succeed. (29) is important in this business, too. A performer must change his "act" in order to follow the taste of the moment. This is true for actors, dancers and (30) , but perhaps most of all for singers.
"Pop" stands for "popular", and a pop singer has to work very hard to become popular. He must either give the public what they already want, or he must find a new way of singing that will attract their (31) . Even when he has succeeded, and his records are sold everywhere, he cannot relax. Then he must work harder than ever to stay popular, because there are always younger singers trying to become famous and to steal some of the (32) .
The
[单选题]施工与维修综合利用协调会应在施工实施前（ ）召开，到会人员需签到，做好会议记录并可采取录音、影像方式留存，24小时内要进行数据转储，留存一年。
A.不少于60分钟
B.不少于90分钟
C.不少于120分钟
D.不少于150分钟
[判断题]乙炔瓶气压试验后，气瓶和管道内的气体排放在室内即可。
A.正确
B.错误
[填空题]Today’s lecture is about the mass (1) of the world’s population. There are two major (2) why people are moving to cities. The first reason is (3) . People are moving to the cities because that’s where they can find (4) and earn money. The second reason for the move to cities has to do with (5) of life issues: comfort and (6) . Cities often offer better (7) . And then for many, city life is just more (8) . An interesting consequence of urbanization is that the average (9) of people in the countryside is increasing, while that of the cities is (10) .
Three key (11) can be identified in our cities. First of all, they’re getting bigger. Most cities are bigger now than ever before. Cities are also changing shape. They’re getting (12) , because land is getting more and more expensive. (13) have become a symbol of modern cities.
Cities are al
[单项选择]流行病学研究中的偏倚一般分为三类，它们是
A. 选择偏倚、无应答偏倚、混杂偏倚
B. 信息偏倚、无应答偏倚、报告偏倚
C. 选择偏倚、信息偏倚、混杂偏倚
D. 测量偏倚、报告偏倚、无应答偏倚
E. 混杂偏倚、报告偏倚、测量偏倚
[判断题]供应商是指向采购人提供货物、工程和服务的法人和其他组织，不包括自然人。( )
