热门试题:
[单选题]4.门静脉高压症患者放置胃管
A..术前日晨插入
B..术前日中午插入
C..术前晚上插
D..术日晨插入
E..术前不插
[单选题]在焊接过程中,( )的作用是保证焊透。
A.钝边
B.反变形
C.间隙
[判断题]人民公社化运动最大的失误是违背了社会主义的基本原则。( )
A.正确
B.错误
[填空题]火焰原子吸收常用()作燃气,用()作助燃气。
[单选题]根据换流方式分类,无源逆变电路不包括( )逆变电路。
A.脉冲换流型
B.自换流型
C.电感换流型
[判断题]调车作业中,禁止溜放调车的车辆应插货物品名牌。
A.正确
B.错误
[多选题]《非空调列车服务质量规范》第3.1条规定,( )结合部等安全管理制度健全有效。
A.防火防爆
B.人身安全
C.食品安全
D.现金票据
[单项选择]下面哪一组功能组合键用于应用程序之间的切换()
A. SHIFT+ALT
B. CTRL+ALT
C. ALT+TAB
D. CTRL+SHIFT
[判断题]配电网的建设与改造以提高供电能力,完善电网网架,提升设备水平为目标,优先解决配电网“卡脖子”、重过载、 “低电压”等问题。
A.正确
B.错误
[单选题]属于选择性诱导型环加氧酶(COX-2)抑制药是( )
A.阿司匹林
B.吲哚美辛
C.布洛芬
D.对乙酰氨基酚
E.塞来昔布
[判断题]某一段时间内负载消耗的电能可以用电度表来测量。
A.正确
B.错误
[单选题]以吗啡或芬太尼为主的静脉复合麻醉多用于哪类病人( )
A.颅内手术病人
B.心脏直视手术
C.颌面部手术病人
D.上腹部手术病人
E.四肢和脊柱手术病人
[单项选择]根据有关研究结果表明,在平直路段防眩板的高度采用()。
A. 1.60m
B. 1.40~1.60m
C. 1.60~1.70m
D. 1.65m
[单选题]关于数据交换,下列叙述不正确的是().
A.A:电路交换是面向连接的
B.B:分组交换比报文交换具有更好的网络响应速度
C.C:报文交换无存储转发过程
D.D:分组交换有存储转发过程
[单选题]各油箱中为何有2%的额外空间?
A.用于冷却
B.用于燃油膨胀不致溢出
C.由于空气存在
D.A+B+C
[单项选择]If you were to begin a new job tomorrow, you would bring with you some basic strengths and weaknesses. Success or (67) in your work would depend, to (68) great extent (69) your ability to use your strengths ,and weaknesses to the best advantage.
(70) the utmost importance is your attitude. A person (71) begins a job convinced that he isn’t going to like it or is (72) that he is going to ail is exhibiting a weakness which can only hinder his success. On the other band, a person who is secure (73) his belief that he is probably as capable (74) doing the work as anyone else and who is willing to make a cheerful attempt (75) it possesses a certain strength of purpose. The chances are that he will do well. (76) the prerequisite skills for a particular job is strength. Lacking those skills is obviously a weakness. A book keeper who can’t add or a carpenter who can’t cut a straight line with a saw
[单选题]消防员衔级晋升培训,时间一般不少于( )天。
A.7
B.15
C.20
D.30
[单选题]在全部或部分带电的运行屏(柜)上工作,应将检修设备与运行设备以()隔开。
A.红线
B.明显的标志
C.绝缘隔板
D.布带
E.略
F.略
[判断题] 592 题, 本小题 1 分
调度员在配电自动化系统研究状态下进行开票,任何操作不应影响实时环境。
A.正确
B.错误
[填空题] Psychologists are finding that hope plays a surprisingly vital role in giving people a measurable advantage in realms as (36) _____________ as academic achievement, bearing up in tough jobs and coping with (37) ______________ illness. And, by contrast, the loss of hope is turning out to be a stronger sign that a person may (38) ______________ suicide than other factors long thought to be more likely risks.
“Hope has proven a powerful predictor of (39) ______________ in every study we’ve done so far,” said Dr. Charles R. Snyder, a psychologist who has devised a (40) ______________ to assess how much hope a person has.
For example, in research with 3,920 college students, Dr. Snyder and his (41) ______________ found that the level of hope among freshmen at the beginning of their first semester was a more (42) ______________ predictor of their college grades than were their S.A.T. scores or their grade point (43) ______________ in high school, the two measures most commonly used to
[多项选择]下列说法正确的是:( )
A. 自然人的民事权利能力,适用经常居所地法律
B. 自然人的民事行为能力,适用经常居所地法律
C. 宣告失踪或者宣告死亡,适用经常居所地法律
D. 人格权的内容,适用权利人经常居所地法律
[判断题]高速铁路正线有砟道床顶面位置,250~300km/h轨枕中部平齐,轨底处:轨枕承轨面以下30~40;道岔区:岔枕顶面以下40~50。
A.正确
B.错误
[单选题]三相异步电动机旋转磁场的旋转方向是由三相电源的( )决定。
A.相位
B.相序
C.频率
D.相位差
[多选题]上市公司的董事、监事和高级管理人员在实行股权激励计划中应当( )。
A. 诚实守信;
B. 勤勉尽责;
C.维护公司的利益;
D. 维护全体股东的利益;
[单项选择]Time for another global-competitiveness alert. In the Third International Mathematics and Science Study--which last year tested a half-million students in 41 countries- American eighth graders 21 below the world average in math. And that’s not even 22 part. Consider this as you try to 23 which countries will dominate the technology markets of the 21st century: the top 10 percent of America’s math students scored about the same as the average kid in the global 24 , Singapore.
It isn’t exactly a news flash these days 25 Americans score behind the curve on international tests. But educators say this study is 26 because it monitored variables both inside and outside the classroom. Laziness- the factor often 27 for Americans’ poor performance--is not the culprit here. American students 28 spend more time in class than pupils in Japan and Germany. 29 , they get more homework and watch the same amount of TV. The problem, educators say, is not the kids but a curriculum t
A. vastly
B. accurately
C. actually
D. merely
[判断题]基层要大力开展实战化训练。坚持任务需要什么就专攻精练什么,按使命任务设计内容,按实战环境设置条件,按任务进程组织演 训,把实战化贯穿渗透于训练全过程各领域。( )
A.正确
B.错误
[多项选择]《生物多样性公约》的目标是()
A. 共同但有区别的履约责任
B. 保护生物多样性
C. 持续利用生物多样性的组成部分
D. 公平合理地分享由利用遗传资源而产生的惠益
[多项选择]社会信用制度的建立应
A. 以道德为支撑
B. 产权为基础
C. 法律为保障
D. 强制为基础
[单选题]数控机床闭环伺服系统是一个双闭环系统,外环是( )。
A.速度环
B.电流环
C.电压环
D.位置环
[多选题].多选题】线路停电检修,工作许可人应在线路可能受电的各方面,含( )和配合停电的线路都已停电,并挂好操作接地线后,方能发出许可工作的命令。
A.变电站
B.发电厂
C.环网线路
D.分支线路
[单选题]黑启动过程中,为保持启动电源在最低负荷下稳定运行和保持电网电压有合适的水平,往往需要()。
A. 投入电抗器
B. 投入电容器
C. 接入部分负荷
D. 调整变压器分头
[单选题]在选择漏电保护装置的灵敏度时,要避免由于正常()引起的不必要的动作而影响正常供电。( )
A. 泄漏电压
B. 泄漏电流
C. 泄漏功率
[单选题]作动筒上下交点轴承为自润滑轴承无需( )。
A.分解
B.防护
C.回收
D.涂油润滑
[单选题]“海内存知己,天涯若比邻”出自唐代诗人王勃的《送杜少府之任蜀州》,这首诗的题材是( )。
A.田园诗
B.山水诗
C.送别诗
D.怀古诗
[单选题]( )消弱了焊缝的有效断面,降低了焊缝的力学性能,造成应力集中,易使焊接结构在承载时遭受破坏。
A.咬边
B.焊瘤
C.夹渣
D.气孔
[多选题] “三宝”包括( )。
A.安全帽
B.安全带
C.安全网
D.安全绳
E.防滑鞋