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[填空题]Before refrigerators, homes usually had ice boxes. But (47) way to keep food cool without the need for electricity is to use an evaporative cooler. This is easy to make and does not even use (48) .
A common design is a tall box with food placed on several shelves inside. The shelves are pieces of metal with many small holes through them. The sides of the box are (49) with pieces of thick cloth. Containers of (50) are placed at the top and bottom of the cooler. The ends of each piece of cloth lie in the water so the cloth stays wet.
Put the cooler in the open air but not in the sun. (51) will pass through the wet cloth. The inside of the box will (52) several degrees cooler than the outside air temperature. And this may be (53) enough to keep foods fresh at least for a short time.
Cold (54) in a freezer, however, can keep foods in good condition for months after the (55)
[判断题]公安局实行生产安全事故责任追究制度。(4651)
A.正确
B.错误
[单项选择]有关抗核抗体（ANA）是抗细胞核成分的抗体的总称，以下说法错误的是（）
A. 健康人ANA均阴性
B. 系统性红斑狼疮ANA的滴度常大于1：80
C. 干燥综合征可以出现ANA阳性，多呈斑点型
D. 硬皮病患者ANA可以高滴度阳性
E. ANA可出现于慢性感染性疾病，如结核、SBE
[单项选择]以下不属于常用拔罐方法的是（）。
A. 留罐法
B. 走罐法
C. 闪罐法
D. 刺血拔罐法
E. 火罐法
[多选题]铁路局要加强动车组在高铁车站存放期间的（）、绝缘子擦拭及应急处置等作业管理。
A.吸污上水
B.防溜管理
C.防冻保温
D.融冰除雪
[单选题]停风的独头巷道，每班在栅栏处至少检查（ ）次瓦斯。
A.1
B.2
C.3
[单选题](618538)案秤在调试稳定性的同时,还要考虑到对( )的影响,因为稳定性和灵敏性关系密切,互为补偿。(1.0分)
A.稳定性
B.灵敏性
C.示值不变性
D.正确性
[单项选择]李某在某菜市场卖菜时使用不符合标准的计量器具，被计量检查员张某在例行检查时发现。张某与李某为邻居，两人一直不合，于是张某借此机会在法定的处罚幅度内对李某进行了过重的罚款。此行政行为主要违反了行政法的哪一项原则
A. 责任行政原则
B. 行政合法性原则
C. 行政合理性原则
D. 行政客观性原则
[判断题]班前、班中饮酒或当班睡觉、班中打牌、饮酒、赌博、擅自脱岗（含汽车驾驶员），不属于高铁、客车安全“红线”范围。
A.正确
B.错误
[单选题]《中国铁路总公司 应急管理部关于保障国家综合性消防救援队伍人员铁路出行优待的通知》（铁总客[2019]92号）规定，符合享受国家综合性消防救援队伍人员铁路出行优待政策的消防救援人员随行家属数量原则上不多于()人。
A.3
B.2
C.4
D.5
[判断题]金属氧化锌避雷器试验项目有：绝缘电阻测量、泄漏电流。
[单选题]通过改变迎角，无人机飞行员可以控制飞机的
A.升力.空速.阻力
B.升力.空速.阻力.重量
C.升力.拉力.阻力
[判断题] 清点人员时,可以清点全体人员,也可以清点部分人员( )
A.正确
B.错误
[多项选择]危险作业监护主要内容：（）以及现场发生突发事件的应急处置等情况。
A. 落实作业指导书（施工方案）、安全技术措施
B. 确认危险作业人员操作资格和健康状况
C. 检查各类工器具、机械设备、安全防护、劳动防护等配备情况
D. 重点部位与作业环节的事故预控措施落实情况
[简答题]为了提高螺杆螺母副的精度，常采用消隙机构调整径向配合间隙。
[单选题]由于党中央、国务院的坚强领导,全国人民的大力支持,志愿者的无私奉献和灾区人民的顽强努力,历经两年多的共同努力,一个薪新的绵阳城矗立在世人面前。从因果关系上看,这属于( )。
A.多果一因
B.同因异果
C.一果多因
D.同果异因
[单项选择] Text
Music is an important way of expressing people’s feelings and emotions. The (26) , for instance, from 1960 to 1969 will be (27) by many people as a period of social and political unrest in America. (28) this time, many people despaired (29) the music favored by the American teenagers. (30) , we must now admit that the music they loved was (31) a sign of the period and a (32) of the tensions and changes that were (33) American society. In the early sixties, (34) about social justice and equality were (35) by the song "Blowing in the Wind" which (36) the civil rights song "We Shall Overcome". The conflict concerning military (37) in Vietnam was sung about in 1965 in the (38) song "Eve of Destruction" and in the song "Ballad of the Green Beret". A few years (39) , a gradual shift
A. mirror
B. creation
C. tool
D. decoration
[单项选择]外国人所办理的就业证、居留证应在( )办理。
A. 被聘用后
B. 意向书签订
C. 入境后
D. 入境工作后
[多选题].对于验证性试验，应根据试件的试验结果和初步分析，对已有的( )进行复核和验证，并提出改进、完善的建议。
A.结构理论
B.计算方法
C.构造措施
D.结构形式
[单项选择]下列四种热轧钢筋中，哪一种是光面圆形？（）
A. Ⅰ级
B. Ⅱ级
C. Ⅲ级
D. Ⅳ级
[简答题]高温天气期间日最高气温达到____度以上,应当停止当日室外露天作业。
[单选题]绝缘接头轨缝不得小于( )。
A.18mm
B.6mm
C.5mm
D.15mm
[单选题]关于休克的叙述中,下列哪项是错误的( )
A.休克就是遭受打击后意识丧失
B.休克时机体有效循环血量急剧减少
C.休克时肾血流量减少,肾小球滤过率降低
D.休克代偿期微循环内前括约肌收缩而致“只出不进”,微循环内血容量减少
E.休克抑制期微循环内前括约肌舒张而致“只进不出”,微循环内血量增加
[多选题]( )(分数:1.50)限
难度) 一些焦点解决咨询师会把例外分为（ ）
A.随机例外
B.突发例外
C.预料意外
D.蓄意意外
[填空题]Until modem times, a trip was often a long and difficult{{U}} (36) {{/U}}. Traveling by horse or camel or on foot was slow and often{{U}} (37) {{/U}}. The roads were usually unpaved and often{{U}} (38) {{/U}}.
Accommodations along the way{{U}} (39) {{/U}}provided nothing more than a roof and a place to cook one’s own food. Traveling by water was{{U}} (40) {{/U}}a little easier, but ships were slow and they had to try to avoid storms at sea.
The first development in modem{{U}} (41) {{/U}}was the steamship, which could sail{{U}} (42) {{/U}}the wind. Then came the rail roads. They were able to carry large numbers of people quickly over long{{U}} (43) {{/U}}for low fares.{{U}} (44) {{/U}}. A trip across the ocean that would have taken weeks only a hundred years ago now takes just a few hours.{{U}} (45) {{/U}}. At first, hotels were built near railroad stations in big cities. Then seaside areas that were served by railroad became the first popular resorts.{{U}}
[判断题]《铁路旅客运输服务质量规范》中规定, 食品加工用具有成品、半成品标记，按标记使用，共同一起存放。
A.正确
B.错误
[多项选择]唐律将盗罪分为哪几种( )。
A. 贼盗
B. 窃盗
C. 强盗
D. 监守盗
[单项选择]What does the man think of the woman’’s choice of clothing
A. He thinks her choice is good.
B. He thinks her choice is terrible.
C. He doesn’’t like the colour.
D. He doesn’’t like the style.
[单选题]实行工班长带领下的 ( ),每次作业均由工班长带队进行,对每一次维修进行详实的记录,严格达到落实岗位责任制的目的。
A.集体作业制
B.分工合作制
C.互联互通制
D.安全责任制
[单项选择]SE序列中180°脉冲的作用是（）
A. 使静磁化向量从z轴转向xy平面上作旋进运动，随之失相
B. 使静磁化向量从xy平面转向Z轴，随之失相
C. 使静磁化向量从x轴转向y轴，随之相位重聚
D. 使静磁化向量从y轴转向x轴，随之相位重聚
E. 相位重聚
[单项选择]董先生，70岁，因胸骨后闷痛2小时入院，心电图示急性广泛前壁心肌梗死。住院当晚，护士发现其反应迟钝，面色苍白、皮肤湿冷、脉搏细弱，应首先考虑发生了（）
A. 心源性休克
B. 心室颤动先兆
C. 急性左心衰竭
D. 并发脑栓塞
E. 急性肾衰竭
