[单选题]电工小李在对配电变压器巡视过程中,发现运行中的某配电变压器发出异常音响,仔细倾听,变压器发出连续的嗡嗡声比平常加重。经测试,变压器二次电压和油温正常,并且负荷没有突变现象。综合这些现象,可分析该情况是由(____)原因造成的。
A. 分接开关故障
B. 变压器内部铁芯松动
C. 变压器的内部有绝缘击穿
D. 套管发生闪络放电
[填空题]
·Read the text below about how to order products.
·In most of the lines (41-52) there is one extra word. It is either
grammatically incorrect or does not fit in with the sense of the text.
Some lines, however, are correct.
·If a line is correct, write
CORRECT on your Answer Sheet.
·If there is an extra word in the
line, write the extra word in CAPITAL LETTERS on your Answer
Sheet.
{{B}}Special Products Co.—How to Order{{/B}}
Our
specialty is our convenient catalogue system. Instead of
spending time going to a shop, you simply order with it directly from
us.
41.Ordering is easy and delivery fast. Once received, your
order will
42.normally be dispatched within 72 hours. We will
inform to you
43.immediately should any items be out of stock.
If you are not happy
44.with your purchases please return them
to us within the 15 days in their
45.original packaging and
[多选题]盘库作业中,对于封条加装完好的盒装/箱装()等车票,可不开封清点,核对加封数进行盘点,如不能确定盒/箱中车票的数量,必须拆封清点。
A.单程票
B.智慧通
C.应急票
D.计时计次票
[单选题]( )为主变流器控制提供同步信号、为原边电压的检测和电度表的计量提供电压输入信号的电器。
A.TV
B.TA1
C.TA2
[单项选择]适用于亚急性、慢性疾病的治疗剂量为()。
A. 热量(Ⅳ级剂量)
B. 微热量(Ⅱ级剂量)
C. 温热量(Ⅲ级剂量)
D. 无热量(Ⅰ级剂量)
E. 超热量(Ⅴ级剂量)
[单选题]恩格斯指出:“马克思的整个世界观不是教义,而是方法。它提供的不是现成的教条,而是进一步研究的出发点和供这种研究使用的方法。”关于这句话的理解错误的是()。
A.马克思主义是方法而不是世界观。
B.马克思主义不要教条地去照搬照抄。
C.马克思主义是需要灵活掌握的。
D.马克思主义提供了人们认识世界改造世界的方法论原则。
[单项选择]下列哪种激素可促进远曲小管和集合管重吸收Na()
A. 肾素
B. 血管紧张素
C. 醛固酮
D. 血管升压素
E. 心钠素
[单项选择]常引起耳前淋巴结肿大的惟一细菌性结膜炎的病原体是()
A. 嗜血杆菌属
B. 淋病双球菌
C. 脑膜炎双球菌
D. 流感嗜血杆菌
E. 肺炎球菌
[单选题]采用实践练习培训法进行培训需做好五个主要步骤工作,包括课程准备.进入阶段.示范阶段.( ).练习阶段。
A.演示阶段
B.观察阶段
C.操作阶段
D.模仿阶段
[单项选择]Which statement is true of a source that wants to transmit multicast traffic to group 239.1.1.1?()
A. Before sending traffic, it must first join multicast group 239.1.1.1 by sending an IGMPv2 membership report to the default router on the local subnet.
B. It must send an IGMPv2 Request to Send packet and then wait for an IGMPv2 Clear to Send packet from the IGMPv2 querier router on the local subnet
C. It may begin transmitting multicast traffic to the group only when there is no other host transmitting to the group on the local subnet.
D. It may transmit multicast traffic to the group at any time.
[填空题] 在列车运行速度160km/h以上至200km/h的区段,接发列车人员的安全距离,距接发列车线路中心距离应不小于( )。
[单选题]在国家安全工作中,下列哪项权利是国家安全机关不能行使的?( )
A.侦查
B.预审
C.起诉
D.拘留
[单项选择]男性病人,21岁,以右手小指麻木1年余来诊。查体:右肘关节提携角40°,右手第1骨间肌萎缩明显,追问病史15年前曾有上臂下端外伤病史。病人症状是由下列哪项引起的()。
A. 骨筋膜室综合征
B. 肘管综合征
C. 腕管综合征
D. 格林-巴利综合征
E. 夏-科关节
[多项选择]有关行政手段,正确的说法是( )。
A. 行政手段是一种对国民经济进行间接调控的手段
B. 行政手段具有直接性、权威性,强制性、无偿性和速效性等特点
C. 在国民经济出现混乱、面临困难的情况下,行政手段能显示它的重要作用
D. 随着我国社会主义市场经济的建立和不断完善,行政手段的运用范围将逐步缩小
[单项选择]关于ELISA竞争法正确的是()
A. 用于检测抗原
B. 被检测物与酶标记物的免疫活性各不相同
C. 被测物多则标记物被结合的机会少
D. 待测管的颜色比参照管的淡表示被测物量少
E. 只用于检测抗体
[单选题]下列有关胆汁酸盐的叙述哪一项是错误的()
A.胆汁酸盐为脂肪消化、吸收所必需
B.胆汁中只有胆酸和鹅脱氧胆酸
C.胆汁酸盐是乳化剂
D.胆汁酸盐能进行肠肝循环
E.胆汁酸盐缺乏可导致机体维生素A、D、E、K的缺乏
[单选题]在可能引起火灾的场所附近进行焊接工作时,应备有必要的( )。
A.A.急救用品
B.B.消防器材
C.C.逃生设施
D.D.通风设备
[判断题]1安全防火制度不严。( )
A.正确
B.错误
[判断题] 被处罚人对治安管理处罚决定不服的,可以依法先申请行政复议后提起行政诉讼
对
错
A.正确
B.错误
[单项选择]
随机抽取甲地100名9岁女童与乙地 100名9岁女童测量身高(m)和体重 (kg),比较两地女童肥胖患病率的检验为
A. 样本均数与总体均数比较的t检验
B. 配对t检验
C. 成组t检验
D. u检验
E. χ2检验
[简答题]选择手动和自动化测试,为了作出一个合理的决定,需要做哪些方面假设?(7个)
[填空题] Do you wake up every day feeling too tired, or even upset If so, then a new alarm clock could be just for you.
The clock, called SleepSmart, measures your sleep cycle, and waits (67) _______ you to be in your lightest phase of sleep (68) _______ rousing you. Its makers say that should (69) _______ you wake up feeling refreshed every morning..
As you sleep you pass (70) _______ a sequence of sleep states — light sleep, deep sleep and REM (rapid eye movement) sleep — that (71) _______ approximately every 90 minutes. The point in that cycle at which you wake can (72) _______ how you feel later, and may (73) _______ have a greater impact than how much or little you have slept. Being roused during a light phase (74) _______ you are more likely to wake up energetic.
SleepSmart (75) _______ the distinct pattern of brain waves (76) _______ during each phase of sleep, via a headband equipped (77) _______ electrodes (电极) and a microprocessor. This measures the electrical act
A. A.reveals
B.reverses
C.resumes
D.repeats
[判断题]床下风道燃烧器在锅炉点火启动时,能迅速将床温加热约450℃左右,至锅炉投煤并稳定燃烧,点火启动系统安全、可靠。
A.正确
B.错误
[单项选择]鱼类蛋白质的氨基酸组成较平衡,与人体需要接近,利用率较高,生物价可达85~90%,其中多数鱼类()含量偏低。
A. 谷氨酸
B. 蛋氨酸
C. 缬氨酸
D. 赖氨酸
[不定项选择题]共用题干
Working Mothers
Carefully conducted researches that have followed the children of working mothers have not been able to show any long-term problems,compared with children whose mothers stayed at home.My personal______(1)is that mothers should be allowed to work if they wish.
Whether we like it or not,there are a______(2) of mothers who just have to work.There are
those who have invested such a big part of their lives in establishing a career that they cannot______(3) see it lost.Then there are many who must work out of pure economic______(4).Many mothers are not______(5) out to be full-time parents.After a few months at home with a much loved infant,they feel trapped and isolated.
There are a number of options when it______(6) to choosing childcare.These range from child minders and nannies through to Granny or the kind lady______(7) the street.______(8) ,howev-er,many parents don't have any choice;they have to accept anything they can get.Be pre-pared!No______(9) how good the childcare may be,some children are going to protest wildly if they are left.This is a______(10) normal stage of child development.Babies separate well in the first six months,but soon after that they start to get a crush on Mum and close family______(11).Make sure that in the first week you allow______(12) time to help your child settle in.
All children are different.Some are independent,while others are more______(13) to their mothers.Remember that if you want to______(14) the best for your children,it's not the quantity of time you spend with them,it's the______(15) that matters.
3._________
A.afford
B.decide
C.hope
D.expect
[单项选择]不属于革兰阴性杆菌的是()
A. 大肠埃希菌
B. 铜绿假单胞菌
C. 变形杆菌
D. 拟杆菌
E. 金黄色葡萄球菌