热门试题:
[单选题] 变压器二次侧负载为Z,一次侧接在电源上用( )的方法可以增加变压器输入功率。
A.增加一次侧绕组匝数;
B.减少二次侧绕组匝数;
C.减少负载阻抗;
D.增加负载阻抗。
[单项选择]公安消防机构对依法没收的产品和违法所得处理错误的是（）。
A. 必须按照国家有关规定处理或者上缴国库
B. 拍卖或变卖的款项，90%上缴国库，10%作为办案费用留存
C. 拍卖或变卖的款项全部上缴国库
D. 不得截流、私分或变相私分
[单项选择]CK活性测定最常规方法是
A. 化学发光法
B. 免疫荧光法
C. 连续监测法
D. 电泳法
E. 层析法
[判断题]<114>漂移是衡量放大器的稳定性能。
A.正确
B.错误
[单选题]周恩来“千古奇冤,江南一叶;同室操戈,相煎何急?!”的题词是为( )而题。
A.四一二反革命政变
B.七一五反革命政变
C.西安事变
D.皖南事变
[单项选择]The lifesaving equipment on all vessels shall be（）.
A. inspected weekly
B. stowed in locked compartments
C. readily accessible
D. tested yearly
[简答题]简述水稻的“两性一期”。水稻的“两性一期”或称为水稻“三性”
[单项选择]2，12，121，1121，11211，（）
A. 11121
B. 11112
C. 112111
D. 111211
[判断题]带钢的卷取温度越高，带钢的晶粒越细，从而其机械性能越好。（ ）
A.正确
B.错误
[填空题]One day a police officer manager to get some fresh mushrooms. He was so pleased with what he had bought that he offered to (47) the mushrooms with his brother officers. When their breakfast arrived the next day, each officer found some mushrooms on his plate,
"Let the dog (48) a piece first," suggested one careful officer who was afraid that the mushrooms might be poisonous. Tile dog seemed to (49) his mushrooms, and the officers then began to eat their meal saying that tile mushrooms had a very strange but quite pleasant taste.
An hour later, however, they were all astonished when the gardener rushed on and said (50) the dog was dead. Immediately, the officers jumped into their ears and rushed into the nearest hospital. Pumps (泵) were used and the officers had a very (51) time getting rid of the mushrooms that (52) in their stomachs. When they (53) to the police station, they sat down and started to discuss t
[单选题]—般情况，水文调查与水文测量在（）进行。
A.丰水期
B.枯水期
C.平水期
D.冰封期
[单选题]用压铅法测量离心式压缩机径向轴承顶间隙时,3条铅丝最后压得厚度为0.38mm、0.36mm、0.37mm,轴瓦两侧接合面放置的紫铜片厚度为0.20mm,则该径向轴承顶间隙为( )mm。
A. 0.36
B. 0.37
C. 0.16
D. 0.17
[多选题]大生产运动和延安整风运动的相同点是( )。
A.有利于建设和巩固抗日根据地
B.为抗战胜利奠定了基础
C.有利于干部素质的提高
D.改善了物质生活
[判断题]在杆塔上使用梯子或临时工作平台，应将两端与固定物可靠连接，一般应由两人在其上作业。（ ）
A.正确
B.错误
[判断题]億2】计量点容量在1000kW以上或月电量在10万kWh上,为一类电能表。 ( )
A.正确
B.错误
[简答题]生产经营单位制止和纠正____、强令冒险作业、违反操作规程的行为。
[单选题]中国电力工业发展史可分为几个阶段？
A.四
B.五
C.六
D.七
[多选题]AutoCAD使用中如何调用“矩形”命令。
A.使用菜单栏:选择"绘图"→"矩形"命令
B.使用工具栏:单击"绘图"工具栏中的"矩形"按钮
C.通过命令行:在命令行输入Rectangle,并按"Enter"键
D.在指令处输入画矩形指令RAC,直接生成矩形
[单项选择]
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic of sleepiness in the nation. "I can’t think of a single study that hasn’t found Americans getting less sleep than they ought to," says Dr David. Even people who think they are sleeping enough would probably be better off with more rest.
The beginning of our sleep-deficit crisis can be traced to the invention of the light bulb a century ago. From diary entries and other personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion that the average person used to sleep about 9.5 hours a night. "The best sleep habits once were forced on us, when we had nothing to do in the evening down on the farm, and it was dark. " By the 1950s and 1960s, that sleep schedule had been reduced dramatically, to between 7.5 and 8 hours, and most people had to wake to an alarm clock. "People cheat on their sleep, and they d
A. improve one’s memory dramatically
B. be considered dynamic by other people
C. maintain one’s daily schedule
D. feel energetic and perform adequately
[判断题]红色运营灯的工作状态和尾灯是不一致的。
A.正确
B.错误
[多选题]下列情形中，受害人有权取得赔偿的是（）。
A.公安机关违法对甲行政拘留 3 日
B.某派出所民警办理治安案件时对乙超时传唤 10 小时
C.某派出所民警在办理治安案件时，在传唤丙进行询问过程中殴打丙致其轻微伤
D.派出所民警在执勤中违法使用警棍造成丁身体造成伤害
[单选题]根据职业守则，城市轨道交通列车安全运行是由（）、车站值班员、列车司机以及行车设备维护人员的共同劳动实现的，各岗位人员必须紧密配合，相互合作。
A.行车调度员
B.总调度
C.站务员
D.专业维修人员
[多选题]近日，IMT-2030(6G)推进组发布《6G总体愿景与潜在关键技术白皮书》。《白皮书》指出，未来6G
业务将呈现出沉浸化、智慧化、全域化等新发展趋势，形成（）等业务应用。
A.智慧交互
96
B.通信感知
C.普惠智能
D.数字孪生
[判断题]装填催化剂时通过充满装填漏斗下的帆布软管由反应器内部人员控制缓慢、均匀地将催化 剂加入床层中。
A.正确
B.错误
[判断题]变电所有备用回路的设备故障时,应与供电调度联系,切除故障设备,投入备用回路或设备。( )
A.正确
B.错误
[单选题]《刑法》第一百三十四条规定，在生产、作业中违反有关安全管理的规定，因而发生（ ）或者造成其他严重后果的，应判处重大责任事故罪。
A.重大事故
B.重大伤亡事故
C.伤亡事故
D.特别重大事故
[单项选择]一对称配筋的钢筋混凝土构件两端固定，由于混凝土收缩（未受荷载）（）。
A. 混凝土中产生拉应力，钢筋中产生拉应力
B. 混凝土中产生拉应力，钢筋中产生压应力
C. 混凝土中产生压应力，钢筋中产生拉应力
D. 混凝土中产生压应力，钢筋中产生压应力
[单选题]若变压器的额定容量是PS,功率因数是0.8,则其额定有功功率是( )。
A.PS
B.1.25PS
C.0.8PS
[判断题]对违反消防法规定,构成犯罪的,依法追究刑事责任。( )
A.正确
B.错误
[多选题]《国家电网公司输变电工程施工现场关键点作业安全管控措施》重点针对（）问题，总结提炼出能够有效防止人身事故的关键措施。
A.责任不落实
B.制度不落实
C.方案不落实
D.措施不落实
