热门试题:
[单项选择]公称直径小于50mm，壁厚小于（）的管子可用气焊焊接。
A. 3.5mm
B. 4.5mm
C. 5.5mm
D. 6.5mm
[单选题]开口于下鼻道的是( )
A.上颌窦
B.额窦
C.筛窦
D.鼻泪管
[单选题] 尖轨、可动心轨顶面宽()mm及以上断面处，尖轨顶面低于基本轨顶面、可动心轨顶面低于翼轨顶面2 mm及以上应及时修理或更换。 （1分）
A.30
B.40
C.50
D.60
[单项选择]患者男，30岁，农民，因“高热伴全身肌肉酸痛、头痛、腰痛4d”来诊。查体：颜面潮红；球结膜充血，咽充血，软腭及腋下皮肤可见出血点；心、肺无异常发现；肝、脾未及，肾区叩痛明显。入院后下列医嘱错误的是（）
A. 虫媒隔离
B. 一级护理
C. 半流食
D. 测体温、脉搏、血压，1次/6h
E. 阿司匹林0.5g，口服，3次/d
[单选题]下列药物中,可引起黑便的药物是
A.铝碳酸镁
B.枸橼酸铋钾
C.硫糖铝片
D.复方氢氧化铝
[多选题]篷布仅用于苫盖敞车装运的（）或其他需要苫盖篷布的货物的货物。
A.怕湿
B.易燃货物
C.污染性物品
D.需要苫盖篷布的货物
[简答题]简述在设计管道时为什么要选择一个经济合理的流速？
[判断题]往复式压缩机的十字头在中体导轨里作往复运动，并将连杆的动力传给活塞部件。
A.正确
B.错误
[单项选择]
20岁男性，持续发热14日，体温39～40℃，乏力，腹胀，大便每日2-3次，稀便，有耳鸣。肝肋下2cm，脾肋下1cm。血白细胞2.0×109/L，中性粒细胞0.45，嗜酸性粒细胞计数为0。最可能的诊断是（）
A. 败血症
B. 伤寒
C. 肺结核
D. 斑疹伤寒
E. 急性血吸虫病
[单选题]某化工企业接到一份10吨新材料研发的订单100万元，该材料由甲，乙，丙三种原材料构成，其中所含金属A不少于4400克，金属B不少于4800克，金属A和B在原材料中的含量及单价如下表所示。经过不断测算和试验，为了获得满足客户要求的这种新材料，该企业最多可获得的利润为（ ）万元。
A.58
B.64
C.42
D.56
[单选题]关于网络图绘制的基本规则，下列说法不正确的是()。
A.网络图的流向一般是从左向右
B.节点代表事件
C.一项工作必须等到与它相连的所有紧前工作结束后才能开始
D.网络图中可以出现循环回路
[不定项选择题]A.红细胞沉降率增高
A.X线呈竹节状改变
B.两者均可
C.两者均不可
D.类风湿性关节炎可见
[单选题]胆囊管与肝总管汇合形成( )
A.胆总管
B.胰管
C.两者均是
D.两者均否
[单选题]隧道施工是指修建（ ）。
A.隧道及地下洞室的施工方法、施工技术和施工管理的总称
B.地下洞室及巷道
C.躲避洞
D.地下交通工程
[单选题]高压电气设备倒闸操作一般应由（）填用配电倒闸操作票（见附录J，以下简称操作票）。每份操作票只能用于一个操作任务。
A.操作人员
B.工作负责人
C.工作监护人
D.检修人员
[判断题]银监会与银行业金融机构的董事、高级管理人员进行监管谈话，要求其就业务活动和风险管理的重大事项做出说明，这属于银监会的信息披露监管。（ ）
A.正确
B.错误
[单项选择]We all have offensive breath at one time or another. In most cases, offensive breath emanates from bacteria in the mouth, although there are other, more surprising causes.
Until a few years ago, the most doctors could do was to counsel patients with bad breath about oral cleanliness. Now they are finding new ways to treat the usually curable condition.
Bad breath can happen whenever the normal flow of saliva (唾液) slows. Our mouths are full of bacteria feeding on protein in bits of food and shed tissue. The bacteria emit evil-smelling gases, the worst of which is hydrogen sulfide (硫化物).
Mouth bacteria thrive in airless conditions. Oxygen-rich saliva keeps their numbers down. when we sleep, for example, the saliva stream slows, and sulfur-producing bacteria gain the upper hand, producing classic "morning breath".
Alcohol, hunger, too much talking, breathing through the mouth during exercise-anything that dries the mouth produces bad breath, So can stress, though it’ s
A. Tooth trouble.
B. Sulfur-rich food.
C. Too much exercise.
D. Mental strain.
[填空题]During playing the role of Israeli Prime Minister Golda Meir, Ingrid Bergman was suffering from a deadly cancer.
[单选题]硫化氢气体检测仪的检定周期一般不超过（）。
A.A．半年
B.B．1年
C.C．2年
D.D．3年
[多选题]应急公交接驳预案结束条件有( )。
A.受影响的区段恢复行车条件
B.滞留乘客疏散完毕
C.受影响的区段恢复行车条件且滞留乘客疏散完毕
D.出入口已正常开启
[单项选择]Ⅲ～Ⅳ级恶性星形细胞瘤特点，不包括（）
A. 易坏死、出血
B. 边界不清
C. 增强明显
D. 易转移
E. 瘤周水肿明显
[单选题]目前我公司生产的100tex奶瓶纱采用的拉丝工艺是1600H()分拉。
A. 2
B. 3
C. 4
D. 5
[填空题]Strange things happen to time when you travel, because the earth is{{U}} (11) {{/U}}into twenty-four time zones(时区), one hour separate. You can have days with more or{{U}} (12) {{/U}}than twenty-four hours, and weeks with more or fewer than seven days. If you make a{{U}} (13) {{/U}}trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time{{U}} (14) {{/U}}one hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has{{U}} (15) {{/U}}twenty-five or twenty-three hours.
[多选题]在我国,由国家财政支撑的保障项目包括哪几类,
A.养老保险
B.社会救助
C.社会优抚
D.社会福利
E.失业保险
[单选题]皮损局限无对称性分布倾向的药疹为:( )
A.固定型药疹
B.麻疹样形药疹
C.猩红热性药疹
D.多形红斑型药疹
[判断题]某线路的正序阻抗为0.2欧/公里,零序阻抗为0.6欧/公里,它的接地距离保护的零序补偿系数为0.5。( )
A.正确
B.错误
[单项选择]高渗性缺水时补液为（）
A. 补充5％葡萄糖溶液
B. 补充高渗盐水
C. 补充2：1溶液
D. 补充平衡盐溶液
E. 补充右旋糖酐
[单选题]信标天线安装在（）（2分）
A.车顶
B.车底
C.电客列车内
D.车载机柜内
[判断题]安全阀的排泄量取决于阀座口径和伐瓣开启度。
A.正确
B.错误
[单项选择]
Some psychologists maintain that mental acts such as thinking are not performed in the brain alone, but that one’s muscles also participate. It may be said that we think with our muscles in somewhat the same way that we listen to music with our bodies.
You surely are not surprised to be told that you usually listen to music not only with your ears but with your whole body. Few people can listen to music that is more or less familiar without moving their body or mom specifically, some part of their body. Often when one listens to a symphonic concert on the radio, he is tempted to direct the orchestra even though he knows there is a competent conductor on the job.
Strange as this behavior may be, there is a very good reason for it. One cannot derive all possible enjoyment from music unless he participates, so to speak, in its performance. The listener "feels" himself into the music with more or less noticeable motions of his body.
The muscles
A. moving some part of their body
B. stopping what they are doing to listen
C. directing the orchestra playing it
D. wishing that they could conduct music properly
[单选题]转向架差压阀在两侧空气弹簧压力差等于（）时动作，两侧空气弹簧导通。
A.1、5bar
B.10、5bar
C.6、7bar
D.6、3bar
[多选题]消防设施监控操作职业方向分为哪几个等级？
A.五级/初级工
B.四级/中级工
C.三级/高级工
D.二级/技师
E.一级/高级技师
[判断题]如果想要测量1981～2000年期间年产出的变动，采用名义GDP指标要比实际GDP更加可靠。
[多项选择]关于酸碱调节的代偿作用，说法正确的是（）。
A. 依靠肝脏把多余的乳酸代谢成NaHCO2
B. 慢性呼吸性酸中毒时肾脏保留HCO3
C. 依靠血液中的缓冲物质抵消多余的酸性或碱性物质减轻pH异常
D. 代谢性酸或碱中毒时通过肺排出或滞留CO2以减轻pH异常
E. 呼吸性碱中毒时通过肾保留H+以减轻pH异常
[单选题]系统在()时，容升现象尤为严重。
A.大运行方式
B.小运行方式
C.故障状态下
D.发生谐振
