热门试题:
[填空题]Scientists have learned more about the way cancer spreads from one place in the body to another. Once it spreads, it gets more difficult to {{U}} (36) {{/U}}.
Cancer is a disease of uncontrolled .cell growth. {{U}} (37) _{{/U}} thinking is that cells simply break off the main cancer, travel through the blood and grow in other organs.
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It works this way. The primary tumor releases proteins called growth factors into the blood. They {{U}} (40) {{/U}} cells at the target organ to produce a sticky protein, called fibronectin. Fibronectin attaches to the surface of bone marrow cells. The result is a kind of {{U}} (41) {{/U}} area for cancer to arrive and grow into a secondary tumor.
The bone marrow cells help make vessels for blood to pass through and {{U}} (42) {{/U}} the c
[多选题]
关于政府对社会总需求的影响,下列表述正确的是( )。
A.政府采购直接影响社会总需求
B.政府转移支付的增加会增加社会总需求
C.政府税收的减少使得企业和个人的可支配收入增加,从而增加社会总需求
D.政府税收的增加使得企业和劳动者的积极性下降,国民收入减少,从而减少社会总需求
E.政府对需求的影响在很大程度上取决于政府的制度和政策
[单项选择]逻辑斯谛曲线被划分为五个时期,其中哪个时期密度增长最快( )
A. 开始期
B. 加速期
C. 转折期
D. 减速期
[单项选择]奥美拉唑减少胃酸分泌主要通过( )
A. 灭活胃壁H+泵
B. 阻断组胺受体
C. 阻断5-HT受体
D. 阻断M受体
E. 阻断DA受体
[单选题]已经开具的发票存根联和发票登记簿,应当保存( )年。
A.1
B.3
C.5
D.10
[单选题]纸质银行承兑汇票贴现期限最长不得超过( )。
A.1个月
B.3个月
C.6个月
D.1年
[判断题]雷电时,禁止测量线路绝缘。( )
A.正确
B.错误
[单选题]经常承担拖挂运输任务的汽车的维护周期比单车运输的汽车的维护周期( )。
A.缩短10%~15%
B.缩短15%~20%
C.延长10%~15%
D.延长15%~20%
[单项选择]People, like most animals, are naturally lazy. So the ascent of mankind is something of a mystery. Humans who make their livings hunting and gathering in the traditional way do not have to put much effort into it. Farmers who rely on rain to water their crops work significantly harder, and lead unhealthier lives. But the real back-breaking is that carried out by farmers who use irrigation. Yet it was the invention of irrigation, at first sight so harmful to its practitioners that actually produced a sufficient surplus to feed the priests, scholars, artists and so on whose activities are collectively thought of as "civilization".
In the past 10,000 years, the world’s climate has become temporarily colder and drier on several occasions. The first of these, known as the Younger Dryas, after a tundra-loving plant that thrived during it, occurred at the same time as the beginning of agriculture in northern Mesopotamia. It is widely believed that this was not a coincidence. The drying a
A. was accompanied by hardships of human existence.
B. is a mystery as yet unknown to mankind.
C. can be attributed to the innovative sparks of ancestors.
D. was recorded by history books ending at that time.
[单项选择]患者,女,32岁,患原发性甲状腺功能亢进(Graves病),甲状腺肿大Ⅱ~Ⅲ度,血清T3、T4均明显增高,脉搏110次/分。
甲状腺大部切除后发生手足抽搐,选用有效的治疗药物是
A. 静脉注射10%葡萄糖酸钙
B. 维生素D2
C. 口服葡萄糖酸钙
D. 地西泮(安定)
E. 二氢速固醇
[单项选择]第67—71 题为套题:
2000 年,《关于完善城镇社会保障体系试点方案》[国发(2000)42 号]经党中央、国务院批准实施。在这一方案中,对我国社会保障体系的构成、指导思想、发展的总目标、应坚持的原则等做出了明确的规定。该方案确定的城镇企业职工基本养老保险制度发展方向是坚持社会统筹与个人账户相结合,其中基本养老保险费( )。
A. 由政府、企业和个人三方共同负担
B. 由职工个人自己负担
C. 由企业和个人共同负担
D. 由政府和企业共同负担
[单选题] 隧道内漏泄同轴电缆吊挂位置应符合设计要求,吊挂高度宜距轨面( )米。
A.4.5-4.8
B.3.5-3.8
C.5.5-5.8
D.6.5-6.8
[单选题]辩正唯物主义认为意识的本质是指( )
A.意识是自然界长期发展的产物
B.意识是社会的产物
C.意识是人脑对客观世界的反映
D.意识是人脑分泌的特殊物质
[填空题]数据库恢复技术中,建立冗余数据最常用的技术有两种:第一种是数据备份,第二种是()
[单选题]线岔处两支承力索交叉处,垂直间距不应小于( )mm。
A.60
B.100
C.200
[多选题]歧化精馏系统进行烃循环时( )。
A.反应进料泵启动
B.各塔全回流
C.开车旁路打开
D.纯甲苯去甲苯罐
[单选题]“学史增信”是党史学习教育的______。
A.重要基础
B.基本要求
C.唯一目标
D.基本条件
[单选题](单选题)在CAD中在启动向导中,A u t o C A D使用的样板图形文件的扩展名是什么( )
A.DWG
B.DWT
C.DWK
D.TEM
[单选题]保险带、绳使用长度在3m以上的应( )。
A.缠绕使用
B.加缓冲器
C.禁止使用
D.采取减少长度的措施
[单项选择]糖浆制剂应存放于()。
A. 专用仓库
B. 低温库
C. 非药品库
D. 阴凉库
E. 常温库
[单选题]物品储存保管的帐物相符率一般情况下不能低于( ),贵重物品要达到100%
A.9
B.95
C.98
D.99
[单项选择]痢下赤白脓血,脐腹灼痛,饮食减少,心烦口干,舌质红蜂少苔,脉细数者,治疗宜选
A. 驻车丸
B. 连理汤
C. 香连丸
D. 芍药汤
E. 桃花汤
[单选题]()滑油系统有释压活门无调压活门
A.恒压式
B.全耗式
C.全流式
D.再循环式
[多选题] 全党必须坚决反对形式主义、官僚主义、享乐主义和奢靡之风,领导干部特别是高级干部要以身作则反对“四风”,重在解决以下问题( )
A. 反对形式主义,重在解决作风飘浮、工作不实,文山会海、表面文章,贪图虚名、弄虚作假等问题
B. 反对官僚主义,重在解决脱离实际、脱离群众,消极应付、推诿扯皮,作风霸道、迷恋特权等问题
C. 反对享乐主义,重在解决追名逐利、贪图享受,讲究排场、玩物丧志等问题
D. 反对奢靡之风,重在解决铺张浪费、挥霍无度,骄奢淫逸、腐化堕落等问题
[单选题]遇雨、雪、雾霾、大风等不良天气,车站要采取防滑、防摔、防风等安全措施。降雨时穿着雨衣,在站台台阶铺设防滑垫时,要采取( )措施,防止防滑垫被大风吹落股道。
A.加固
B.警示
C.防滑
D.提醒
[单选题]隧道出口距离预告标志设置在长度超过3000m的特长隧道内,从距离隧道出口2000m处开始每( )设置一块,直至隧道出口。
A.250m
B.100m
C.1000m
D.500m
[填空题]
There are several things about motorcycling that the average citizen dislikes. A cyclist’s(31) has something to do with this dislike. Motorcylists frequently look dirty, in fact, they are dirty. On the road there is little to(32) them from mud, crushed insects, and bird droppings. For practical reasons they often(33) in old clothing which looks much less(34) than the clothing of people who ride in cars. For the same reason motorcyclists usually wear(35) colors. Perhaps this helps to explain why they are sometimes(36) of having evil natures. In old(37) of long ago, evil characters usually wear black. In(38) movies the "bad guys" usually wear black hats(39) the "good guys" wear lighter colors.
Something else about their appearance makes an(40) impression. In their practical, protective clothing they very much like the men(41) military motorcycles in the movies of World War Two-cruel enemies who reared into(42) villages(43) people’s hear
[多项选择]生产经营单位有下列行为之一的,责令限期改正;逾期未改正的,责令停产停业整顿,可以并处二万元以上十万元以下的罚款;造成严重后果,构成犯罪的,依照刑法有关规定追究刑事责任()。
A. 生产、经营、储存、使用危险物品,未建立专门安全管理制度、未采取可靠的安全措施或者不接受有关主管部门依法实施的监督管理的
B. 对重大危险源未登记建档,或者未进行评估、监控,或者未制定应急预案的
C. 进行爆破、吊装等危险作业,未安排专门管理人员进行现场安全管理的
D. 未指定专职安全生产管理人员进行安全检查与协调的
E. 未指定兼职安全生产管理人员进行安全检查与协调的
[多选题]疏散救人主要途径有( )、( )、( )、( )等,
A.建筑外窗
B.疏散通道
C.楼梯
D.消防梯
[单选题]()是指可燃的气体、蒸汽或粉尘与空气混合后,遇火会产生爆炸的最高或最低的浓度。( )
A.爆炸浓度极限
B.爆炸
C.爆炸温度极限
D.自燃
[单项选择]()是人口转变理论的创立者,也是人口学派最有影响的人物。
A. 汤普森
B. 雷文斯坦
C. 海克尔
D. 麦德斯
[单选题]踏板支承和渡板连杆的安装连接需要( )。
A.销轴
B.尼龙轴套
C.开口销
D.螺钉
[单项选择]哪项不是药品的质量特性()
A. 高质量性
B. 有效性
C. 安全性
D. 稳定性
E. 均一性
[多项选择]告警处理流程的基本要素包括()。
A. 告警发现
B. 告警确认
C. 告警预处理
D. 告警处理
E. 告警清除
[判断题]110KV GIS电气设备的金属外壳接地是工作接地
A.正确
B.错误
[单选题]测得某段长为5km壁厚为6mm的输气管线的储气量为2990m3,管线运行时的最高平均压力为3MPa,最低平均压力为1.2MPa,管内气体温度为25℃,忽略天然气压缩系数影响,则该管线的规格为().
A.φ508×6
B.φ630×6
C.φ219×6
D.φ159×6
[多选题] "军队单位实行现金“双限额”()额度管理制度。
A..季度提款限额
B..月份提款限额
C..库存现金限额D年份提款限额"
[单项选择]关于产后抑郁的描述,错误的是
A. 产后抑郁可由多方面因素造成
B. 是一种精神病
C. 有家族倾向
D. 可表现出自我伤害行为
E. 与孕期不良生活事件有关