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[简答题]齿轮油泵的优缺点是什么?何谓齿轮泵的困油现象,如何解决?  

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[多选题]人民防空地下室电气设计中,下列哪些表述符合国家规范要求?( )
A.进、出防空地下室的动力、照明线路,应采用电缆或护套线
B.电缆和电线应采用铜芯电缆和电线
C.当防空地下室的电缆或导线数量较多时,且又集中敷设时,可采用电缆桥架敷设的方式,电缆桥架可直接穿过临空墙、防护密闭隔墙、密闭隔墙
D.电缆、护套线、弱电线路和备用预埋管临空墙、防护密闭隔墙、密闭隔墙,除平时有要求外,可不做密闭处理,临战时应采取防护密闭或密闭封墙,在30d转换时限内完成
[单选题]下列哪种措施是处理气瓶受热或着火时应首先采用的?
A.设法把气瓶拉出扔掉
B.用水喷洒该气瓶
C.接近气瓶,试图把瓶上的气门关掉
D.打开气瓶,放掉内部气体
[多选题](多选题)世界遗产委员会要求检查世界遗产保护情况的工作报告必须包括下列哪些项目?
A.说明自从世界遗产委员会收到上一份报告以来,遗产所面临的威胁或保护工作取得的重大进步
B.世界遗产委员会此前关于遗产保护状况的决定的后续工作
C.有关遗产赖以列入《世界遗产名录》的突出的普遍价值、完整性和/或原真性受到威胁、损害或减损的信息
D.该遗产面临严重的、特殊的危险
E.该遗产法律地位的改变而引起保护力度的减弱
[判断题]航空上常用的几种气压有本站气压、修正海平面气压、场面气压和标准海平面气压。( )
A.正确
B.错误
[单项选择]
{{B}}TEXT D{{/B}}

Poetry Daily, a web site for professionally published poetry, was set up in April 1997 and by the end of August had been visited by more than a million internet users. The online anthology offers a new poem every day from more than 50 publishers of poetry books and journals. The service is one of many sites benefiting from the growing popularity of poetry on the world Wide Web.
"Our goal is to make poetry a part of daily life again," says co-founder of Poetry Daily, Don Selby. "Using the web, our readers can enjoy a new poem over their morning coffee, at the start of their work day, or on their lunch hour."
Although more than a thousand poetry books are published in the United States every year, promotional budgets for poetry publications remain small, and competition for bookstore shelf space has intensified. Editor and co-founder Diane Boiler believes Poetry Daily provides an opportunity for readers t
A. It is convenient to the readers.
B. It provides much more shelf space for poetry.
C. It enables readers to browse more freely.
D. It helps promote poetry magazines and journals.
[单选题]在矿车上采样时,在矿车对角线上平均四段布点,始末两点应位于车角0.3mm,另一点为两点的( ),采样按三点循环采取一个子样。
A.中点
B.末点
C.首点
D.任意点
[单项选择]“项目管理器”的“运行”按钮用于执行选定的文件,这些文件可以是______。
A. 查询、视图或表单
B. 表单、报表和标签
C. 查询、表单或程序
D. 以上文件都可以
[判断题]高处吊篮内作业人员不应超过 5 人.
A.正确
B.错误
[判断题]火炬最大排放量的确定原则是按事故状态时各系统排出的全部气体总量来考虑。( )
A.正确
B.错误
[多选题]1893年,法国占领老挝,在老挝实行分治政策,即将老挝划分为()和()上寮和下寮两大区域,分别派出法国总督统管。
A.上寮
B.中寮
C.下寮
D.寮国
[单项选择]胆碱能性荨麻疹典型皮损的特点为
A. 风团直径大小不等
B. 风团直径8~10mm,周围无红晕
C. 风团直径8~10mm,周围有一较小红晕
D. 风团直径2~3mm,周围无红晕
E. 风团直径2~3mm,周围有一较大红晕
[单选题] 创造性思维是指有创见的思维,是能揭示客观事物( )的思维方式。
A.表现形式
B.发展状况
C.外因条件
D.本质及内在联系
[多选题]采用( )评定混凝土强度时,当混凝土强度等级不高于C20时,其强度的最小值?cu,min尚应满足( )要求。
A.统计方法
B.非统计方法
C.≤0.90?cu,k
D.≤0.85?cu,k
E.≥0.90?cu,k
[判断题]埋弧堆焊修理活柱的优点之一是与基体结合强度高。( )
A.正确
B.错误
[单项选择]手术治疗马腹股沟阴囊疝的最佳切口部位是()。
A. 腹股沟内环处
B. 腹股沟外环处
C. 阴囊颈部正外侧
D. 朋囊底部正外侧
E. 阴囊体部正外侧
[单选题]违章吊拔埋在地下的物品,容易()使钢丝绳断裂。
A.弯曲疲劳
B.超负荷
C.磨损
[单项选择]下列哪种疾病可导致纵隔扑动()
A. 张力性气胸
B. 闭合性气胸
C. 多根多处肋骨骨折
D. 进行性血胸
[单项选择]不同电视节目的复用方式属于()。
A. 时分复用
B. 空分复用
C. 码分复用
D. 频分复用
[单项选择]子宫内膜癌放疗中F点的概念是( )
A. 宫腔源顶端旁开2cm
B. 穹窿上2cm,子宫中轴外2cm
C. 穹窿上2cm,子宫中轴外5cm
D. 穹窿上5cm,子宫中轴外2cm
E. 穹窿上2cm,子宫中轴外3cm
[单项选择]运动损伤后,经过一段时间的治疗和休息,肿胀、疼痛症状消失,许多人以为完全康复了,其实不然。在损伤恢复的后期,仍要在不加重疼痛的前提下,加强受伤部位的功能性锻炼,防止受伤部位因长期代谢障碍而引起组织变形或功能改变;只有这样才能彻底康复。
根据这段话,理解正确的是( )。
A. 运动损伤后要经过长时间的治疗和休息
B. 功能性锻炼是运动损伤的辅助治疗手段
C. 损伤恢复后期是进行功能性锻炼的最佳阶段
D. 根据疼痛症状是否消失足以确定病人是否康复
[单选题]转K4型转向架承载鞍与侧架导框的间隙左右之和为( )。
A.6~14mm
B.6~14.5mm
C.6~16mm
D.6~18mm
[判断题] 检修动火时,动火时间一次绝不能超过一天。
A.正确
B.错误
[单项选择]C型药物不良反应的特点有
A. 发病机制为先天性代谢异常
B. 潜伏期较短
C. 可以预测
D. 有清晰的时间联系
E. 多发生在长期用药后
[单选题]各省公司对于拟捐赠金额超出( )的捐赠项目,应在实施前请示网公司审批。
A.20万元
B.50万元
C.100万元
D.200万元
[单项选择]下列关于反转录酶的叙述,错误的是
[多项选择]下列说法中,属于职业禁语的是()。
A. “问别人去”
B. “不知道”
C. “我有什么办法,又不是我让它坏的”
D. “后边等着去”
[判断题]接近水淹或可能积水的井巷、老空或相邻煤矿时,必须先进行探水。
[单项选择]

患者,女性,18岁,昨日饱食及饮酒后起持续性上腹剧痛,伴腹胀、呕吐。体检:体温38.8℃,血压90/50mmHg,脉搏120次/min,上腹有压痛及反跳痛,尿中胆红素(++),血钙1.3mmol/L

目前病情下应首先行哪项检查进一步确诊()。
A. 腹部X线平片
B. 胆囊造影检查
C. 血淀粉酶测定
D. 血管造影
E. 以上均可
[单选题]工作许可人在接到所有工作负责人(包括用户)的终结报告,并确认所有工作已完毕,所有(  )已撤离,所有接地线已拆除,与记录簿核对无误并做好记录后,方可下令拆除各侧安全措施。
A.A.工作许可人
B.B.小组负责人
C.C.工作票签发人
D.D.工作人员
[单项选择]In the absence of optimism, we are left with nothing but critics, naysayers, and prophets of doom. When a nation expects the worst from its people and institutions, and its experts focus exclusively on faults, hope dies. Too many people spend too much time looking down rather than up, finding fault with their country’s political institutions, economic system, educational establishment, religious organizations, and--worst of all--with each other.
Fault finding expends so much negative energy that nothing is left over for positive action. It takes courage and strength to solve the genuine problems that afflict every society. Sure, there will always be things that need fixing. But the question is, do you want to spend your time and energy tearing things down or building them up
The staging of a Broadway show could illustrate my point. Let’s say a new production is about to open. A playwright has polished the script, investors have put up the money, and the theater has been rente
A. ignore minor imperfections
B. overemphasize flaws
C. see both sides of a coin
D. pin their hopes on improvements
[多选题]高压并联电容器补偿装置内部故障的主保护( )。
A.内熔丝保护
B.外熔丝保护
C.重瓦斯保护
D.轻瓦斯保护
[单选题]、以下对细菌性食物中毒的说法不正确的是( )
A.明显的季节性
B.发病急,病死率低
C.发病与进食有关系
D.无传染性
E.病愈所需时间长
[单选题]事故现场有易燃易爆气体或有毒有害物质扩散时,在扩散区( )选择进攻路线接近扩散区。
A.上风.侧上风方向
B.上风方向
C.下风.侧上风方向
D.下风方向
[简答题]成段扣件达到什么伤损标准,应成段更换大修?
[单项选择]40岁。女性,参加婚宴后右上腹痛,呈剧烈绞痛,查体见表情痛苦,不安。对该患者诊治,紧急又有价值的处置是()。
A. 镇痛药止痛
B. 抗生素消炎
C. 急查血常规
D. 行PTC检查
E. 紧急行腹部超声检查
[单项选择]
{{B}}Why is the Native Language Learnt So Well{{/B}}
How does it happen that children learn their mother tongue so well When we compare them with adults learning a foreign language, we often find this interesting fact. A little child without knowledge or experience often succeeds in a complete mastery of the language. A grown-up person with fully developed mental powers, in most case, may end up with a faulty and inexact command. What accounts for this difference
Despite other explanations, the real answer in my opinion lies partly in the child himself, partly in the behavior of the people around him. In the first place, the time of learning the mother tongue is the most favorable of all, namely, the first years of life. A child hears it spoken from morning till night and, what is more important, always in its gen

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