题目详情
题目详情:

[多项选择]交流焊机的()低于60-80V,电弧不稳定,影响焊接质量。
A. 工作电压
B. 引弧电压
C. 空载电压

热门试题:

[单项选择]{{B}}Part A{{/B}} {{I}}You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer—A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE. Now look at Question 1.{{/I}}Where does the conversation most probably take place
A. In a supermarket.
B. In a restaurant.
C. In the man’s home.
D. In the woman’s home.
[填空题] There are more than forty universities in Britain--nearly twice as many as in 1960. During the l%0s eight 【B1】 new ones were founded, and ten other new ones were created by 【B2】 old colleges of technology into universities. In the same period the number of students 【B3】 doubled, from 70,000 to more than 200,000. By 1973 about 10% of men aged from eighteen to twenty-one were in universities and about 5% of women. All the universities are 【B4】 institutions. Each has’’ its own governing councils, 【B5】 some local businessmen and local politicians as 【B6】 as a few academics (大学教师). The state began to give grants to them fifty years 【B7】 , and by 1970 each university 【B8】 nearly all its 【B9】 from state grants. Students have to 【B10】 fees and living costs, but every student may receive from the local authority of the place where he lives a personal 【B11】 which is enough to pay his full costs, including lodging and 【B12】 unless his parents are 【B13】 Most 【B14】
A. A.more than
B.other than
C.rather than
D.almost

[单项选择]缺乏下列哪种元素时,缺素症首先在植物的老叶表现( )
A. N
B. Ca
C. Fe
D. B
[判断题]行政复议机关原则上是行政机关,但不是所有的行政机关都可以成为行政复议机关。() 判断题
A.正确
B.错误
[单选题]患者男,68岁。因阿尔茨海默病入院治疗。今晨进食馒头、豆浆时、突然面色发绀,双眼瞪大,意识丧失。应立即采取的措篮是
A.迅速将口腔内的食物枢出
B.吸氧
C.准备行气管切开术
D.使患者平卧,解开衣领、腰带
E.注射去甲肾上腺素
[单项选择]餐饮管理者通过确定目标,使员工在完成目标的过程中发挥自己的潜力,并实现自己的个人价值。这种激励是()。
A. 需要激励
B. 榜样激励
C. 信任激励
D. 目标激励
[判断题]木立柱模板支架的封顶立杆大头应朝下,并双股绑扎。
A.正确
B.错误
[单项选择]一般慢性支气管炎咳嗽、咳痰发展成肺心病至少需
A. 3~5年
B. 5~10年
C. 6~10年
D. 5~8年
E. 4~6年
[简答题] (1)The term hospital derives from the Latin word hospitalis, which relates to guests and their treatment. (2) The word reflects the early use of these institutions not merely as places of healing but as safe rooms for the poor or for weary travelers. Hospitals first appeared in Greece as aesculapia, named after the Greek god of medicine, Aesculapius. For many centuries they developed in association with religious institutions, such as the Hindu hospitals opened in Sri Lanka in the 5th century BC and the monastery-based European hospitals of the Middle Ages (5th century to 15th century) (3)The first hospital established in the United States was Pennsylvania Hospital in Philadelphia, which was open in 1751 with the support of Benjamin Franklin. (4)Although other U.S. hospitals were created in the 1700s, most people were treated for their illnesses by neighbors and friends in their homes well into the 1800s. Hospitals changed greatly after the Civil War--in
[判断题]杨某提供虚假材料申请行政许可,被发现,行政机关不予行政许可,并予以警告。
A.正确
B.错误
[单项选择]某乳剂采用司盘80、卖泽49、阿拉伯胶各10g作为混合乳化剂,若司盘80、卖泽49和阿拉伯胶的HLB依次为4.3、15和8,则该混合乳剂的HLB值为()
A. 3.1
B. 5.5
C. 4.3
D. 8
E. 9.1
[多项选择]2002年9月17日,日本首相小泉纯一郎对朝鲜进行访问,双方领导人进行会谈,发表了《日朝平壤宣言》。《宣言》除决定重开日朝邦交正常化谈判外,其他内容还有()
A. 日本政府对过去在朝鲜实施的殖民统治表示深刻反省和诚挚道歉,在邦交正常化的谈判中真诚地就两国经济合作具体内容和规模进行协商
B. 对于1945年以前发生的事情,双方相互放弃一切财产损失追索权
C. 朝鲜将采取切实措施,以使关系到日本国民生命和安全的悬案问题不再发生
D. 为了一揽子解决朝鲜半岛核问题,双方确认遵守一切相关的国际决议。朝鲜表明了将冻结导弹试射的时限继续延长到2003年以后的意向
E. 日、美、朝、韩即将就安全保障问题开展协商
[多选题]严禁破坏( )等安全煤柱。
A.工业场地
B.矿界
C.防水
D.井巷
[简答题]铁路职工必须具有履行铁路职业道德的高度主动性和自觉性。
[单项选择]晶闸管可控整流电路承受的过电压为()。
A. 换相过电压、交流侧过电压与直流侧过电压
B. 换相过电压、关断过电压与直流侧过电压
C. 交流过电压、操作过电压与浪涌过电压
D. 换相过电压、操作过电压与交流侧过电压
[多选题]安全生产投入主要用于哪些方面( )
A.建设安全和卫生技术措施工程
B.重大安全生产课题的研究
C.职工的安全生产教育和培训
D.改善职工岗位人员福利待遇
[单选题]尿路刺激征包括()
A. 尿急
B. 尿痛
C. 尿频,尿急,尿痛,排尿不尽
D. 排尿不尽
E. 尿频
[单项选择]( )是施工管理的重点。
A. 进度
B. 质量
C. 合同
D. 成本
[多项选择]信号发送要严格执行的三准是()。
A. 瞄准
B. 看准
C. 放准
D. 听准
E. 发准
[判断题]在交流电路中,把热效应与之相等的直流电的值称为交流电的有效值。
A.正确
B.错误
[单项选择]Nyquist图上以原点为圆心的单位圆对应于Bode图上的()。
A. 0dB线
B. 1dB线
C. 10dB线
[单选题](第四十一条)开展训练时在高温时段,训练持续时间不宜过长,一般应比正常训练时间缩短( )。训练宜安排在室内或荫凉通风处进行,避免曝晒。( )
A.1%至5%
B.15%至20%
C.30%至40%
D.50%
[单选题]昏迷的主要特征是( )。
A.意识丧失
B.随意运动消失
C.对外界刺激减缓或无反应
D.大小便失禁
[多选题]依据《中国南方电网有限责任公司电力安全工作规程》(Q/CSG 510001—2015)第26.2.9.4条规定:绝缘绳、网应存入在干燥、通风的库房内,并经常检查、防止( )、( )、( )和( )。
A.受潮
B.受污
C.虫蛀
D.机械损伤
[多项选择]根据有关法律规定,对以下哪些人员一般不裁定或不执行拘留( )
A. 李某在市内的某科技公司做文员,怀孕在身
B. 张某违反治安管理行为的当天正好过20周岁生日
C. 夏某患有严重疾病
D. 王某患有性病
[填空题]从Component类派生出来的 【8】 类用于表示GUI中的容器,该类具有的功能是组件管理和布局管理。
[单项选择]关于无权代理的选项中正确的是( )。
A. 无权代理行为不能转化为合法的代理行为
B. 无权代理是无代理权的行为人以自己名义进行民事、经济活动
C. 代理权终止后继续行使代理行为
D. 被代理人不可以对无权代理行使“追认权”
[判断题]容量筒根据集料的公称最大粒径选择,大一级的粒径也可选择小一级的容量筒。( )
[单选题]我国的政体是( )。
A. 人民民主专政
B. 人民代表大会制度
C. 多党合作和政治协商制度
D. 民族区域自治制度
[不定项选择题]资料:The federal government on Wednesday recommended an endangered-species listing for the loggerhead turtles in U.S. Waters, a decision that could lead to tighter restrictions on fishing and other maritime trades.Environmental groups who’ d been pushing an endangered listing said the proposal was a “turning point”they hope will lead to greater turtle protections. “I think it’ s huge day for loggerhead sea turtles, ”said Beth Riff, a marine wildlife scientist at Oceana.“it really draws attention to the fact these turtles are not doing well and more needs to be done to protect them.”With all that attention to paid to them, you’d think these creatures would at least have the gratitude not to go extinct, but Nature is indifferent to human notions of fairness.No one really knows how many loggerhead there are, or how many are being killed by fishing gear or other activities. Riff cites a 40 percent drop in the number of nesting females in Florida over the last decade as evidence of trouble. Loggerheads are named for their large heads, which contain potent jaws that can crush the hard shells of prey such as conch. The turtles are about the size of a fist when they hatch and make a frenzied dash to the surf. But they typically grow to more than three feet in length and 250 pounds. The animal can log thousands of miles as it travels across oceans. Barbara Schoder,national sea turtle coordinator for NOAA’s fisheries division, said the biggest threats to the North Pacific loggerhead include damage to primary nesting sites, which are mainly in Japan,as well as accidental snaring of the turtles in fishing gear. Andrea Tee of San Francisco-based Center for Biological Diversity said the turtles get hooked by Hawaiian longline fishermen targeting swordfish and tuna and can be injured or drowned. On the East Coast, the main threat to turtles is gear from the region’s various fishenes Schoder said. A primary benefit of the endangered status would be increased public pressure on protecting the species, Riff said. But the government would also have to determine“critical habitats,”such as where the turtles reproduce or forage. Such places could be subject to additional protections for the turtles, including restrictions on maritime development or fishing. Like every other environmental issue today, this is playing out against the background of global warming and human interference with natural ecosystems, The narrow strips of beach on which the turtles lay their eggs are being squeezed on one side by development and on the other by threat of rising sea levels as the oceans warm. Ultimately we must get a handle on those issues as well, or a creature that outlived the dinosaurs will meet its end at the hands of humans, leaving our descendants to wonder how creature so ugly could have won so much affection. The last sentence of the passage is meant to ( ).
A.warn our descendants about the extinction of species
B.Call for effective measures to ensure sea turtles’ survival
C.Persuade human beings to show more affection or turtles
D.Stress that even the most ugly species should be protected
[单选题]ATS数据刻录的介质使用( )。
A.移动硬盘
B.CD
C.DVD
D.BD
[多项选择]热拌沥青混合料路面的施工过程主要包括( )。
A. 沥青表面处置
B. 混合料压实成型
C. 混合料拌制、运输
D. 嵌缝料摊铺
E. 混合料摊铺
[填空题]铁路事故责任分为全部责任、主要责任、()责任、次要责任和同等责任。
[单选题] ( )能够作为脂肪酸运输的载体,将长链脂肪酸从细胞线粒体膜外转移到膜内,在线粒体中氧化产生能量。
A. 番茄红素
B. 膳食纤维
C. 谷氨酰胺
D. 左旋肉碱
[单项选择]在管理会计的发展过程中,变动成本法最初被称为()。
A. 吸收成本法             
B. 归纳成本法    
C. 直接成本法             
D. 边际成本法
[单项选择]局部浸润扩展,很少发生转移的是()。
A. 原位癌
B. 腺鳞癌
C. 未分化癌
D. 基底细胞癌
E. 鳞状细胞癌
[判断题]道路运输管理机构在日常工作中,已经掌握被考核机动车维修企业质量信息考核指标情况的,可不再要求机动车维修企业报送此项指标的相关材料。( )
A.正确
B.错误
[单选题]苦杏仁中毒后,最有效的解毒药是( )
A.阿托品
B.纳洛酮
C.二巯丙磺钠
D.亚甲蓝(美蓝)
E.亚硝酸异戊脂+3%亚硝酸钠+25%硫代硫酸钠

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