热门试题:
[单项选择]ADSL采用的是（）技术。
A. 模拟传输
B. 同步传输
C. 数字传输
D. 无线传输
[多选题]隧道冻害造成衬砌变形、开裂，但未形成纵横交错裂缝，状态评为B级。
A.正确
B.错误
C.a.AA级
D.b.A1级
E.c.B级
[单选题]患者，女性，48岁，因左侧乳房肿块，乳头内陷就诊，诊为乳腺癌患者出现乳头内是( )。
A.肿堵塞皮下淋巴管
B.癌肿侵犯Cooper韧带
C.癌肿与皮肤粘连
D.癌肿侵犯与胸肌粘连
E.癌肿侵犯乳管
[判断题]采用组合夹具可缩短夹具设计制造周期，适应新产品试制等单件小批生产的需要。
[多选题] 根据 GB/T12243-2005《弹簧直接载荷式安全阀》的规定:关于安全阀结构的说法是哪些正确的?()。
A.全启式安全阀应有限制开启高度的机构
B. 整定压力大于 3.0MPa 的蒸汽用安全阀排出的介质不能直接冲蚀弹簧
C. 介质温度大于 235℃的空气或其他体用安全阀排出的介质不能直接冲蚀弹簧
D. 蒸汽用的安全阀应带有扳手
[单选题]密切观察存有爆炸危险的现场情况,减少一线作业人员,保持足够安全距离,发现危险征兆应( )。
A.应实施防爆措施
B.应迅速撤离
C.应向上级汇报
D.应提前准备灭火
[单项选择]TRAINING OPPORTUNITIES FOR LOCAL BUSINESSES
Aseries of 15 one-day courses is being planned for small businesses in the Scar brook area during September and October. The focus will be on practical training in a range of business skills areas, including presentation skills, marketing on the internet, negotiating effectively and dealing with difficult clients.
The courses are being run by a recently founded training organisation, Scar brook Training Company (STC). This organisation is a partnership between Scar brook Council and the town’s Business Development Agency, which has been training Scar brook businesses for a number of years.
A spokesperson for the company confirmed that STC, which receives government funding, is offering these courses free of charge. This is an excellent opportunity for local businesspeople, who would otherwise expect to pay as much as ￡250 to attend a one-day business skills course.
Although firms are allowed to register a maximum of
A. Right
B. Wrong
C. Doesn’t say
[多选题]风级表上，轻风的海岸及地面象征标准是( )。
A.人面感觉有风
B.树叶微响
C.寻常的风向标转动
D.渔船张帆时，可随风移动
E.举伞有困难。
[单选题]小儿最常见的心脏病是
A.先天性心脏病
B.风湿性心脏病
C.肺炎合并心衰
D.病毒性心肌炎
E.冠心病
[单选题]迎送队旗时，掌旗员、护旗员行进、转弯、步法变换和停止的口令由（ ）下达。
A.指挥员
B.口令员
C.护旗员
D.掌旗员
[单选题]液压传动系统中油缸属于( )元件
A.动力原件
B.执行原件
C.控制原件
[判断题]风险管理是指开展危险源辨识、风险评价以及采取风险控制措施策划与实施的全过程。( )
A.正确
B.错误
[单选题]停电作业结束后，工作负责人应报告（）。
A.公司领导
B.工作票签发人
C.工作许可人
D.现场监理
[单项选择]A rich woman is so proud (41) a valuable antique(古董) vase that she decides to have her bedroom (42) the same colour (43) the vase. Several painters try to mix the colour right, but (44) comes close enough to satisfy the woman. Eventually, a painter comes. He is confident that he can (45) the proper colour. The woman is pleased with the result, and the painter becomes (46) . Years later, he retires and turns the business (47) to his son. "Dad," asks the son, "there’s something I’ve got to know. (48) did you get those wails to (49) the vase so perfectly" "Son," the father replies, "I painted the (50) /
A. wall B. room C. vase
[判断题]组织在项目管理过程中应用系统管理方法，在综合分析项目质量、安全、环保、工期和成本之间内在联系的基础上，结合各个目标的优先级，分析和论证项目目标，在项目目标策划过程中兼顾各个目标的内在需求。（ ）（GB/T 50326—2017《建设工程项目管理规范》3.5.3）
A.正确
B.错误
[判断题]重点旅客是指依靠辅助器具才能行动等需特殊照顾的重点旅客。
A.正确
B.错误
[多项选择]根据《治安管理处罚法》的规定，下列属于该法中行政处罚种类的是( )。
A. 警告
B. 罚款
C. 行政拘留
D. 吊销许可证
E. 没收货物
[单选题]图形符号表示的是。
A.可调节流阀
B.调速阀
C.溢流节流阀
D.普通节流阀
[单项选择]
Scientists in the UK have announced that the piranhafish’s reputation (21) a fearsome (22) may well not be deserved. The fish, which is found in the Amazon in Brazil, have been (23) as deadly carnivores (食肉动物) that work in shoals to overwhelm their prey and strip it of its flesh in seconds.
However, experts (24) St Andrews University say that piranhas are omnivores (杂食动物) that mainly eat fish, plants and insects. They form big groups not to hunt but to defend (25) against other predators, according to the team.
"Previously it was thought piranhas shoaled as it (26) them to form a cooperative hunting group," said Professor Anne Magurran. " (27) , we have found that it is primarily a defensive behavior."
Piranhas can be attacked by animals (28) dolphins, caimans and large fish, so forming a shoal is a good way of (29) being killed. Piranhas of (30) A. them
B. themselves
C. it
D. itself
[单项选择]Rate your level of proficiency with deploying and managing an application virtualization environment,including preparing virtual applications; and installing, configuring and managing App - V environments.（）
A. Very High
B. High
C. Moderate
D. Low
E. Very Low
[判断题]ZYJ7道岔的表示装置与道岔的实际位置没关系。（）
A.正确
B.错误
[填空题] 裂解燃料油PGO+PFO为（ ）装置的产品，产量为6.44万吨/年，设计储存天数为（ ）天。
[单选题]并联电容器组允许在不超过额定电流的30%的运行情况下长期运行。三相不平衡电流不应超过( )。
A.2%
B.5%
C.10%
D.20%
[单选题]入座时不能 、翘腿或手托下巴趴在桌面。( )(1.0 分)
A..劈腿
B.抖腿
C..背手
D..手插口袋
[单项选择]借鉴西方个人信用制度发展的经验，考虑目前我国的个人信用状况，我国宜采用（）模式。
A. 政府主导
B. 市场主导
C. 混合
D. 单一
[判断题]大型养路及施工机械作业，如施工机械不超出机车车辆上部限界，且作业人员及所持机具与接触网带电部分保持2m以上距离时，接触网可不停电。（ ）
A.正确
B.错误
[单项选择]
a-D-葡萄糖苷键水解方式是
A. 酸水解
B. 碱水解
C. 麦芽糖酶解
D. 苦杏仁酶解
E. Smith裂解
[单项选择]公司使用的计划系统，其焦点首先集中于所需的产品数量和时间，然后确定每一个生产步骤中原材料、零件以及配件的需求。这种系统被称为（）。
A. 经济订货数量
B. 材料需求计划
C. 线性规划
D. 适时制采购
[简答题]电力机车轮芯和轮箍间放置（ ）是为了防止轮箍弛缓时外窜，确保机车安全。
[单选题]怀疑有背部和颈部受伤时，应 ( )。
A.将其扶到座位上坐好
B.将其扶到座位上躺好
C.不要移动，必要时进行固定
D.全部都不对
[判断题]气化炉炉开车过程中水汽升温过快造成激冷盒处变形，仅会造成激冷盒下顶板间隙变化。
A.正确
B.错误
[简答题]设有齐次线性方程组
[*]
试问a取何值时，该方程组有非零解．并求出其通解．
[填空题]逆变可分为有源逆变和__________两种。
[多选题] 下列关于我国城乡经济体制改革的叙述中正确的是（ ）。
A.把单一公有制经济发展为以公有制为主体的多种所有制并存的经济
B.改革生产关系中不适应生产力发展的环节
C.解放社会主义生产力的重大步骤
D.把计划经济转化为市场经济的改革
[简答题]装置发生生产安全事故后,事故现场有关人员应当立即报告（ ）
[单项选择]汉武帝时对刺史的职权有明确规定，即“奉诏六条察州”，其中有“二千石不奉诏书、遵承典制，倍公向私，旁诏守利，侵渔百姓，聚敛为奸”。对材料信息解读正确的是：（）
A. 打击地方高级官员察举士人时偏向亲己
B. 打击地方高级官员执法不公
C. 打击地方高级官员以权谋私的不法行为
D. 打击地方高级官员子弟不法
[单选题]客货共线铁路线间距，站内相邻两线均需通行超限货物列车线间最小距离为( )
A.4000mm
B.5300mm
C.4200mm
D.4400mm
