热门试题:
[简答题]Americans sometimes feel that treating a guest as one of the family will make him feel more comfortable. Sometimes American families have "buffet" style dinners because they are informal and easier to serve, especially if there are several guests.
[单项选择]不引起缺氧性肺血管收缩的体液因素是（）
A. 白三烯增加
B. 前列腺素F2α增加
C. 血栓素增加
D. 内皮素释放增加
E. 一氧化氮生成增加
[单选题]在Word 2010表格中，如果想精确地指定单元格的列宽，应____。
A.使用鼠标拖动表格线
B.使用鼠标拖动标尺上的“移动表格列”
C.使用“表格”菜单中的“表格属性”对话框
D.通过输入字符来控制
[单项选择]I learnt French easily. ______, I didn’ t like my teacher.
A. Therefore
B. Anyhow
C. Thus
D. However
[多选题]在期权交易市场，影响期权价格的因素有()。
A.期权的剩余期限
B.期权的执行价格
C.标的资产价格波动率
D.利率
[单项选择]{{B}}Questions 11 to 18 are based on the conversation you have just heard.{{/B}}
A. He lost his money.
B. He had an account with him.
C. He had no money in the bank.
D. He had spent all his money.
[单选题]《高铁快运业务管理办法》规定，高铁快运由快运公司作为高铁快运业务经营主体对外经营，经（ ）时向铁路局办理托运手续。
A.铁路运输
B.公路运输
C.航空运输
D.水路运输
[单选题]道岔内钢轨重伤比照道岔内钢轨折断进行处理。道岔的辙叉、尖轨及钢轨伤损更换后不能焊接时，应临时处理并限速( ) km/h,并尽快恢复原结构。
A.A: 不超过60
B.B: 120
C.C: 16
D.D: 不超过160
[单选题]“蓝色革命”作为一种现代农业技术革命，是指人类向水域索取食物的重大技术革命的统称。下列行为与“蓝色革命”不符的是( )。
A.创造鱼类的产卵环境，适时将幼鱼放回海湾
B.利用科技手段在海体中养鱼，待长成后聚而捕之
C.围海造田、大力发展畜产饲料工业
D.改造滩涂，种植海底饲料，建立海底牧场
[单选题] WindowsXP中文默认环境,登陆用户名adminstrator环境下,一般不能将模型文件转换为igs格式文件至( )路径。
A.c:\prt\
B.c:\
C.我的文档
D.桌面
[多选题]目前光纤通信三个实用的低损耗工作窗口是（ ）
A.0.85μm
B.1.27μm
C.1.31μm
D.1.55μm
[多项选择]以下是低压电动机主回路低压断路器的长延时脱扣器参数选择的正确方法的有( )。
A. 长延时脱扣器在7.2倍额定电流下的动作时间，应大于电动机的实际起动时间
B. 低压断路器仅用作短路和接地故障保护时，可不装没长延时过电流脱扣器
C. 用长延时脱扣器作电动机过载保护时，其整定电流应接近，但不小于电动机的额定电流
D. 当K延时脱扣器的整定电流不能兼作电动机的过载保护时，电动机应另装可靠的过载保护
[单选题]A1型题霉菌性阴道炎的患者,外阴阴道可见
A. 散在红色斑点
B. 阴道分泌物黄色水样
C. 边缘有不规则凸起的溃疡
D. 白色膜状物
E. 小阴唇及阴道粘连
[单项选择]正常成人心电图，错误的是（）
A. P波时限<0.12s
B. ST段任何导联上抬均<0.1mV
C. 0RS波群0.06～0.10s
D. Q-T间期0.60s
E. P-R间期0.12～0.20s
[判断题]工作票有破损不能继续使用时，应补填新的工作票。补填的工作票不需再次履行签发许可手续。
A.正确
B.错误
[单项选择]建筑节能分部应在（）进行验收。
A. 工程竣工后
B. 检验批合格后
C. 工程竣工验收前
D. 所有节能子分部验收后
[单项选择]鲁迅和学衡派论争的著名文章是（）。
A. 《青年必读书》
B. 《打到孔家店》
C. 《文化偏至论》
D. 《估〈学衡〉》
[单选题]对厚度30cm以内的混凝土结构，其保护层厚度不应小于( )。(A 、3、A)[020102]
A.1.5cm
B.2cm
C.3cm
D.5cm
[多选题]调速系统进行调试动作时，禁止将（ ）伸入转动部件活动区域内，并保证水轮机室和蜗壳内应有足够的照明。
A.A.头
B.B.手
C.C.脚
D.D.以上都不对
[单项选择]
金银花的功效是
A. 清热燥湿，泻肝胆火
B. 清热燥湿，退热除蒸
C. 清热燥湿，泻火解毒
D. 清热解毒，疏散风热
E. 清热燥湿，消痈散结
[单项选择]不包含在医学伦理学有利原则之内的是
A. 努力使病人受益(有助益)
B. 努力预防和减少难以避免的伤害
C. 对利害得失全面权衡
D. 造成有意伤害时主动积极赔偿
E. 关心病人的客观利益和主观利益
[单项选择]Things in the henhouse changed practically overnight when McDonald’s announced in 1999 that it would no longer buy eggs from producers who didn’t meet its guidelines for care of chickens. Those guidelines included limiting the (51) of birds that could be kept in one (52) and prohibiting beak removal, (53) trimming just the tips.
Once McDonald’s had (54) the way in issuing animal care guidelines for the company’s suppliers, many other giants of the fast food industry rapidly followed suit, including Burger King, Taco Bell, Pizza Hut, Wendy’s, A＆W, and KFC. Now, the American Meat Institute has (55) welfare guidelines and audit (56) for cattle, pigs, and chickens. And the European Union, representing our foreign customers, is also weighing in with, among other things, legislation banning (57) use of crates to house pregnant sows, effective in 2013.
Questions about animal care (58) with the explosive growth i
A. performances
B. programs
C. problems
D. practices
[单选题]70.某市烟草专卖局查获当事人宋某无证生产滤嘴棒100件，价值4万元，认定违法所得3000元，根据上述情况和相关法律法规，某市烟草专卖局可对宋某做出（）的行政处罚，并将其违法生产的烟草专卖品公开销毁。
A.责令其关闭，没收违法所得3000元，处以8000元罚款
B.责令其关闭，没收违法所得3000元，处以9万元罚款
C.责令其停止生产，没收违法所得3000元，处以5万元罚款
D.责令其停止生产，没收违法所得3000元，处以2万元罚款
[单选题]起重机械吊索与物件的夹角宜采用45°～60°，且不得小于30°或大于（ ），吊索与物件棱角之间应加垫块。
A.45°
B.60°
C.90°
D.120°
[判断题]按照控制方式不同，车载消防炮可分为手动、电控、电-液控、电-气控等形式
A.正确
B.错误
[判断题]运转中的机械设备对人的伤害主要有撞伤、压伤、轧伤、卷缠。( )
A.正确
B.错误
[多选题]《广深港高速铁路跨境旅客运输组织规则》手续费按（ ）2元核收。
A.每人
B.每次
C.每笔
D.每张票
[多项选择]在权证交易中，禁止的事项包括（）。
A. 权证发行人不得买卖自己发行的权证
B. 禁止任何人通过操纵权证价格影响其对应的标的证券价格
C. 禁止内幕信息知情人员利用内幕信息进行权证交易活动，获取不正当利益
D. 禁止任何人通过操纵标的证券价格影响其对应权证的价格
[不定项选择题]共用题干
Where Did the Earth's Water Come From?
Earth is located within the"snow line"of the solar system,the region closest to the Sun where H2 0 is primarily in liquid or gaseous form,if at all.______(46)The snow line phenomena is reflected in the water content of planets like Mercury,Venus,and Mars. Water is absent on Mercury.On Venus,H2O only exists as a trace element in the atmosphere.Mars only has a thin veneer of ice in its polar regions.In general,water is rare within the snow line.
Why does Earth have so much water relative to the other inner planets?71%of the surface is covered in the oceans,more than half of which is deeper than 3,000 meters,with an approximate total volume of 1.3 billion cu km.______(47)
There are various theories as to where all the Earth's water came from,but several theories have fared better than the others.______(48)When the Earth was in the process of forming,with a radius just 40%smaller than at present,it would have had enough gravity to hold on to a tenuous atmosphere with water vapor. The first water vapor on the planet would have come from the planet's internals,where volatile(low weight)chemicals would have a tendency to float to the top,and heavy chemicals(iron and nickel)would sink.
Though the first of Earth's water came about through volcanism,this alone probably didn't produce enough to form stable pools on the surface.______(49)Comparing the isotope ratios of water on Earth and water from comets and asteroids has revealed that the majority of the Earth's water comes from asteroids.
Throughout its history,Earth's water has increased in volume due to biological processes. In the early seas of Earth,hydrogen sulfide would have been in great supply,which,when reacted with carbon dioxide from the atmosphere during photosynthesis in sulfide-reducing bacteria,would have produced hydrogen,sulfur,and water.______(50)
________（48）
A.More water was added to the planet during several hypothesized large impacts from asteroids from the outer asteroid belt.
B.We know that the oceans existed as early as 100 million years after the formation of the Earth.
C.Still,the oceans only make up 0.023%of the Earth's total mass.
D.Astronomers say Earth s water may have come from space.
E.The snow line is located in the outerasteroid belt,between the orbits of Mars and Jupiter.
F.Many geologists believe that the majority of Earth's water generated through this process.
[单项选择]数据流图用于抽象描述一个软件的逻辑模型，数据流图由一些特定的图符构成。下列图符名标识的图符不属于数据流图合法图符的是______ 。
A. 控制流
B. 加工
C. 数据存储
D. 源
[单项选择]以下属于重工产品的是（）。
A. 旅游鞋
B. 钢铁
C. 家用电器
D. 牛仔裤
[单项选择]从给出的几句话中选出有语病的一句( )
A. 为了让酒店的内部设计足够有趣，我们下了很多工夫
B. 为了让酒店的内部设计也足够有趣，我们下了很多工夫
C. 为了让酒店的内部设计也足够有趣，我们也下了很多工夫
D. 为了让酒店的内部设计足够有趣，我们确实下了很多工夫
[单选题]七氟丙烷灭火系统及IG541灭火系统等系统应检查灭火剂和驱动气体储存容器内的压力，不得小于设计储存压力的( )。
A.70%
B.80%
C.90
D.95%
[单项选择]某男，35岁，咽喉肿痛，咽干，口渴，便秘，尿黄，舌红，苔黄，脉洪大。除少商、合谷、尺泽、内庭外，应加取（）。
A. 内庭、关冲、风池
B. 内庭、关冲、天突
C. 关冲、厉兑、鱼际
D. 列缺、照海、鱼际
E. 太溪、曲池、鱼际
[单选题]气相色谱仪的进样系统维护不到位的是（ ）。
A. A 清洁汽化室
B. B 更换进样密封垫
C. C 清洁新密封垫
D. D 在280℃老化密封垫
