热门试题:
[单项选择]亚历山大城有著名数学家（）办的学校。
A. 阿基米德
B. 欧几里得
C. 恩培多克勒
D. 毕达哥拉斯
[单选题]基因芯片技术的主要步骤不包括
A.芯片的设计与制备
B.样品制备
C.杂交反应
D.信号检测
E.酶切分析
[单选题] 截止阀发生内漏的处理方法是（ ）。
A.尽力关死阀门
B.反复开关阀门
C.快速关死阀门
D.加堵盲板"
[填空题]泵的型号为DG46-50×5，其中46指（），50×5指（）。
[单项选择]Neither Peter ______ Jack works in this factory.
A. or
B. nor
C. either
[判断题]《中国石化安全风险评估指导意见》规定：中国石化安全矩阵规定了中国石化可接受安全风险标准、评估指标和剩余风险值管理的安全要求，各单位应统一运用。
A.正确
B.错误
[单选题]在焊接变形中，对焊接结构件的尺寸和形状影响最大的焊接变形应是（）。
A.A、纵向收缩变形
B.B、横向收缩变形
C.C、角变形
[单项选择]
说明：阅读下列程序(段)并回答问题，在每小题提供的若干可选答案中，挑选一个正确答案。
【程序】
SET TALK OFF
CLEAR
STORE .T. TO
X
STORE 0 TO Y
DO WHILE X
Y=Y+1
IF
INT(Y/5)= Y/5
Y
ELSE
LOOP
ENDIF
IF Y＞15
STORE .F. TO X
ENDIF
ENDDO
SET TALK
ON
RETURN |
第一次输出Y值为 ______。
A. 5
B. 6
C. 7
D. 8
[简答题]把下列十六进制数转换为二进制数（2FF.A）16
[不定项选择题]健脾康儿片主治
A.脾胃气虚所致的疳证
B.脾胃气虚所致的泄泻
C.小儿消化不良，虫积腹痛
D.食滞化热所致的积滞
E.食滞肠胃所致的积滞
[单项选择]阅读下面一段说明文，完成下列4题。
什么是星云过去人们往往把天空中一切云雾状的天体都说成是星云。其实，离我们非常遥远的位于银河系以外的云雾状天体，并不是星云，而是与银河系类似的庞大的恒星系统。根据它们的外貌，人们有时也称其为河外星云，即银河系以外的星云。不过，实际上还是应当如实地把它们称为河外星系。河外星系的发现使我们知道，在天文学史上早期所发现的“星云”中，只有一部分是真正的星云。星云不但应当看起来是云雾状的，而且应当是真正由气体和尘埃组成的云雾状物质。这样的星云广泛地存在于银河系和河外星系之中。而我们现在所能看到的只局限于银河系的星云，即所谓银河星云。它的类型不同。形状不一，大小不等。其中有一种叫弥漫星云，具有不规则的形状，一般没有明确的边界。我们的太阳系就是在弥漫星云中形成的。但是，直接形成太阳系的，并不是整个的弥漫星云，而是由弥漫星云分解而成的星云块，即所谓球状体。形成太阳系的那个球状体，我们称它为太阳星云。
根据文章，下列“星云”的定义中，哪个是正确的
A. 星云是在银河系中广泛存在的，由气体和尘埃组成的云雾状物质。
B. 星云是在银河系和河外星系中广泛存在的，由气体和尘埃组成的云雾状物质。
C. 星云是在银河系和河外星系中广泛存在的，由气体和尘埃组成的球状物质。
D. 星云是在银河系中广泛存在的，由气体和尘埃组成的球状物质。
[单选题]交流电多用（ ）或"～"表示。
A.AC
B.DC
C.AI
D.DI
[单项选择]
The horse and carriage is a thing of the past, but love and marriage are still with us and still closely interrelated. Most American marriages, (1) first marriages uniting young people, are the result of mutual attraction and affection (2) than practical considerations.
In the United States, parents do not (3) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (4) .
(5) young people feel free to choose their friends from (6) groups, most choose a mate of similar (7) .
This is due in part to parental guidance. Parents cannot (8) spouses (配 偶 ) for their children, but they can usually (9) choices by voicing disapproval of someone they consider unsuitable.
(10) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (11) probably becau
A. arrange
B. engage
C. manage
D. propose
[单选题]李某醉酒后殴打路人王某(系残疾人),致王某轻微伤。经查,二人素不相识,李某称酒后心情不好便殴打王某。下列说法正确的是()。
A.王某系残疾人,对李某应当从重处罚
B.本着有利于化解矛盾的原则,如双方同意调解,可以治安调解
C.对李某醉酒后的违法行为,可以减轻处罚
D.李某构成寻衅滋事的违反治安管理行为
[多选题]在电气设备上工作，保证安全的技术措施由（）执行。
A.调控人员
B.检修人员
C.运维人员
D.有权执行操作的人员
[单选题]基坑排水常用水泵有离心泵、( )等。
A.抽水泵
B.自吸泵
C.真空泵
D.潜水泵
[单选题] 货车下心盘螺栓直径M24安装（ ）开口销。
A. Ф2mm
B. Ф3mm
C. Ф4mm
D. Ф5mm
[判断题] ( )二氧化硫排入空气会造成污染，是形成酸雨的重要因素。
A.正确
B.错误
[单选题]B-A-A-001 2 2 3
光纤通信系统按调制方式划分可分为:( )光纤通信系统。
A.直接调制、内调制
B.外调制、间接调制
C.直接调制、外调制
D.外调制和内调制结合
[单项选择]产妇产后排尿不畅或完全不能排尿的原因不包括（）
A. 膀胱尿道水肿
B. 疼痛
C. 不习惯卧床排尿
D. 膀胱尿道撕裂伤
E. 膀胱尿道收缩无力
[单项选择]在高危人群中进行HIV抗体筛检来了解艾滋病的流行概况属于（）。
A. 一级预防
B. 二级预防
C. 三级预防
D. 主动检测
E. 哨点监测
[单选题]（ ）应根据调车作业计划制定具体作业方法，连同注意事项，亲自向司机交递和传达；对其他有关人员，应亲自或指派连结员进行传达。
A.车站调度员
B.车站值班员
C.调车指挥人
D.连结员
[判断题]决定可以用来规范人们的行为，具有法定的强制力。( )
[判断题]风电场一般测风时间至少为1年,数据有效数据完整率要达到90%以上。 ( )
A.正确
B.错误
[简答题]对从接触网上引接的越级变压器的隔离开关，接触网作业人员可直接向供电调度申请倒闸命令之前。
[多选题]车辆交通事故人员被困形式有（ ）。
A.被困
B.被压
C.被卡车内
D.被卡在车辆与其他物品之间
[单项选择]We walked in so quietly that the nurse at the desk didn’t even lift her eyes from the book. Mum pointed at a big chair by the door and I knew she wanted me to sit down. While I watched, mouth open in surprise, Mum took off her hat and coat and gave them to me to hold. She walked quietly to the small room by the lift and took out a wet mop. She pushed the mop past the desk and as the nurse looked up, Mum nodded and said, "Very dirty floors."
"Yes. I’m glad they’ve finally decided to clean them," the nurse answered: She looked at Mum strangelyand said, "But aren’t you working late"
Mum just pushed harder, each swipe of the mop taking her farther and farther down the hall. I watched until she was out of sight and the nurse had turned back to writing in the big book.
After a long time Mum came back. Her eyes were shining. She quickly put the mop back and took my hand. As we turned to go out of the door, Mum nodded politely to the nurse and said, "Thank you."
Outside, Mu
A. It is a children’s hospital.
B. It has strict rules about visiting hours.
C. The nurses and doctors there don’t work hard.
D. A lot of patients come to this hospital every day
[单项选择]逆变器的输出电压幅值与频率由（）决定。
A. 输入电压
B. 网侧电压
C. 软件设定
D. 硬件设定
[单选题]氨中毒患者脑内能量产生减少的主要机制是
A.酵解过程障碍
B.三羧酸循环减慢
C.磷酸肌酸分解障碍
D.脂肪氧化障碍
E.酮体利用障碍
[多项选择]采用来料加工贸易方式出口货物，办理出口货物免税申报时，应提供的原始凭证有( )。
A. 盖有海关验讫章的出口货物报关单复印件
B. 出口发票原件
C. 出口收汇核销单
D. 来料加工免税证明原件
E. 收汇银行进账单
[单选题]钩尾框须进行抛丸除锈,表面清洁度不低于GB8923规定的( )。
A.Sa1级
B.Sa2级
C.F1级
D.F2级
[填空题]Here’s a tale of two companies. Both are foreign owned, and both are embroiled in scandals involving allegations of sexual harassment. Company A is confronted with the problem and punishes top execs. Company B stonewalls and mounts an aggressive campaign to discredit its accusers and portray itself as a victim of slander.
(41)For business schools looking for a few good case studies in damage control, last week was about as good as it gets. One was Swedish pharmaceuticals company Astra USA, a maker of asthma medications and the popular anesthetic Xylocaine. Facing similar charges, Mitsubishi Motor manufacturing of America opted for in-your-face denial. Who did it right It’s too soon to know for sure. Astra’s strategy may seem smarter. Financially speaking, at least, one can see why Mitsubishi is reluctant to issue a public mea culpa. Fessing up could expose it to as much as $200 million in damages.
Such controversies are no rarity these days. The Equal Employment Opportunity c
[单选题]根据《信息安规》，设备、业务系统接入公司网络应经（ ）批准, 并严格遵守公司网络准入要求。
A.信息通信调度部门
B.信息运维单位（部门）
C.分管领导
D.业务主管部门（业务归口管理部门）
