热门试题:
[多选题]直流电阻测试时，缩短变压器绕组直流电阻测量时间的方法有（）
A.串联绕组助磁法
B.消磁法
C.加大试验电流
D.减小试验电流
[单选题]CRH380A统型动车组“ ”时可以引起紧急制动。
A.列车分离
B.总风管压力过高
C.紧急电磁阀得电
D.司机制动控制器手柄置B7位
[单选题]使用30～75A的电流进行电焊作业，一般选用的护目镜片的遮光号为（）。
A.3～4
B.5～6
C.7～8
D.9～11
[简答题]为什么采用非线性控制系统？有哪几种实施方法？
[单选题]老年人跌倒后,出现口角歪斜、言语不利、手脚无力,可能发生了()
A.癫痫发作
B.脑卒中
C.骨折
D.大出血
E.脑震荡
[填空题]GE-各行要将保险公司发放的保险单作为( )管理。
[单项选择]
"≥5μm动态悬浮粒子最大允许数为2×103个/m3"的工作区的洁净度为（）
A. A级
B. B级
C. C级
D. D级
E. E级
[多选题]异常值的检测方法有( )。
A.直接通过数据可视化进行观察
B.通过统计分布进行判断
C.通过相对距离进行度量
D.通过相对密度进行度量
[判断题]检修发电机、同期调相机，检修机组装有可以堵塞机内空气流通的自动闸板风门的，应采取措施保证使风门不能打开，以防窒息
A.正确
B.错误
[单选题]二次雷达天线采用合成孔径技术是为了( ),使其值比辐射波束宽度所能达到的方位分辨率要高得多。(5105)
A.改善雷达的方位分辨率
B.改善雷达的距离分辨率
C.提高测量精度
D.提高探测能力
[判断题]认知域包括了网络用户相互交流产生的知识、思想、情感和信念。
[单选题]飞机的方向阻尼力矩主要由
A.水平尾翼产生
B.垂直尾翼产生
C.机身产生
[单选题]主机ip地址为172.23.56.167，子网掩码为255.255.255.240，该主机网络号为172.23.56.164。
A.A、正确
B.错误
[单项选择]以下药物的鉴别反应为：青霉素V钾（）.
A. 火焰反应，火焰显紫色
B. 供试品的吡啶溶液加铜吡啶试液1滴，即显紫色
C. 供试品溶液加硝酸，即显红色，渐变为黄色
D. 制备衍生物测其熔点，应为174～178℃
E. 供试品溶液与三氯化铁试液作用，即显紫色
[多项选择]出现以下事项而信托计划文件未有事先约定的，应当召开受益人大会审议决定（）。
A. 提前终止信托合同或者延长信托期限
B. 改变信托财产运用方式
C. 更换受托人
D. 提高受托人的报酬标准
[单选题]根据《海牙公约》的规定，实施劫机行为的旅客，在航空器降落地缔约国接受移交并进行初步调查后，应将调查结果通知的国家有（ ）。
A.航空器登记国
B.被拘留人的国籍国
C.承租人主营业地国或永久居住地国
D.以上都正确
[判断题]依法治国是社会主义法治的核⼼内容， 执法为⺠是社会主义法治的本质要求 ( )
A.正确
B.错误
[单选题]泡沫液喷射不均匀的原因是（ ）。
A.解控阀没有全接通
B.空气压力不足
C.限流针状阀关得太紧
D.泡沫液挡板有缺陷
[单项选择] How to Prevent Insomnia
Do you have trouble falling asleep Do you fall asleep easily, then wake up 5 hours later and can’’t fall back asleep Do you wake up several times during the night and have trouble staying asleep If so, you are one of over 100 million Americans who experience some form of insomnia (失眠) and your sleep may be improved by better sleep habits.
Tips for better daytime habits
Do not nap during the day. If you are having trouble sleeping at night, try not to nap during the day because you will throw off your body clock and make it even more difficult to sleep at night. If you are feeling especially tired, and feel as if you absolutely must nap, be sure to sleep for less than 30 minutes, early in the day.
Limit caffeine and alcohol. Avoid drinking caffeinated or alcoholic beverages for several hours before bedtime. Although alcohol may initially act as a sedative (镇定剂), it can interrupt normal sleep pattern
A. Y
B. N
C. NG
[简答题]Two months ago you got a job as an editor for the magazine Designs & Fashions. But now you find that the work is not what you expected. You decide to quit. Write a letter to your boss, Mr. Wang, telling, him your decision, stating your reason(s), and making an apology. Write your letter with no less than 100 words. Write it neatly on ANSWER SHEET 2. Do not sign your own name at the end of the letter; use "Li Ming" instead. You do not need to write the address. ( 10 points)
[判断题]根据《建设工程施工现场安全防护、场容卫生及消防保卫标准》（DB11/945-2012）的规定，发电机房、变配电房、厨房操作间、锅炉房、可燃材料库房及易燃易爆危险品库房等用房应为1层，其建筑构件的燃烧性能应为B级。
A.正确
B.错误
[单选题]通常在一个控制系统中,控制装置在机器运转时,( )锁定在闭合的状态。
A.保持
B.回到
C.不会
[多选题]熊彼特对创新定义的三层涵义是( )。
A.更新
B.创造新的东西
C.改变
D.失败
[单选题]对于RL低通电路，若R=275欧姆，L=125微亨，该电路的临界频率为（）KHZ。
A.250
B.300
C.350
D.400
[判断题]“台账”是指在工作中建立和使用的包含时间、数字及相关文字描述内容的表格。
A.正确
B.错误
[判断题] 主动脉球囊反搏可能出现血小板减少( )
A.正确
B.错误
[多选题]安装.拆卸施工起重机械和整体提升脚手架,模板等自升式架设设施安装完成后,( )。
A.安装单位应当自检
B.出具自检合格证明
C.并向施工单位进行安全使用说明
D.办理验收手续并签字
E.向建设单位进行安全说明
[单选题]动车组(电力机车)区间停车,必须登车顶检查时,应按规定办理( )手续。
A.停电
B.交接
C.防护
D.运行
[多选题]设备劣化的表现形式：( )。
A.机械磨损
B.裂纹
C.塑性断裂和脆性断裂
D.腐蚀
E.元器件老化。
[填空题]具有双管供风装置的机车应向( )等其他用风装置提供风源。
[单选题] 原规定为通过的旅客列车由正线变更为到发线接车及动车组列车、特快旅客列车遇特殊情况必须变更基本进路时,须经( )准许,并预告司机
A. 调度所值班主任
B. 车站调度员
C. 列车调度员
D. 值班站长
[单选题] 单股钢丝绳( )较大。
A.弹性
B.挠曲性
C.刚性
D.弯曲性
[单选题]
下列哪个消防员不得辞职()
A.预备消防士
B.一级消防士
C.二级消防长
D.一级消防长
[单项选择]
To produce the upheaval (激变) in the United States that changed and modernized the domain of higher education from the mid-1860s to the mid-1880s, three primary causes interacted. The (1) of a half-dozen leaders in education provided the personal force that was needed. (2) , an outcry (呐喊) for a fresher, more practical, and more advanced kind of instruction (3) among the alumni (校友) and friends of nearly all of the old colleges and grew into a movement that overrode (压倒) all (4) opposition. The aggressive "Young Yale" movement appeared, demanding partial alumni control, a more (5) spirit, and a broader course of study. The graduates of Harvard College simultaneously (6) to relieve the college’s poverty and demand new (7) . Education was pushing toward higher standards in the East by (8) off church leadership everywhere, and in the West by finding a wider range of studies and a new (9) of
A. uproar
B. threshold
C. emergency
D. emergence
[判断题] 指战员应做好安全防护，可以在厂房仓储场所内门口脱卸空气呼吸器。( )
A.正确
B.错误
[多选题]下列哪种情形不符合食品加工人员卫生要求?
A.未经洗手消毒直接进入作业区域
B.将私人物品带入作业区域
C.在作业区域内吸烟、饮食
D.进入作业区城规范穿着洁净的工作服，并按要求洗手、消毒
[填空题]One of the most important goals of education is the (11) of academic excellence, not just for a few (12) children but for everyone. We believe that children (13) enormous potential. Guided by the right method of learning, every child can make progress. Given the chance and the right method, children will study willingly (14) , especially when are provided with the means to measure their own progress and are spared from (15) about keeping up with others.
