热门试题:
[单项选择]患者男,50岁,左上中切牙有深楔状缺损,可探及露髓孔,探无感觉,X线检查发现根尖有大面积阴影。在进行根管治疗时,有关开髓部位的选择哪一种说法是正确的
A. 由于楔状缺损部位已经通髓腔,可从楔状缺损处制备进入髓腔的洞型
B. 由于切牙的舌面窝髓壁薄,可以从舌面窝向牙颈部方向钻入
C. 由于切牙的髓腔形态与切牙的外形基本一致,可以从切瑞开始向牙根方向钻入
D. 只要能进入髓腔的任何一部位都可以
E. 以上都不是
[单项选择]急性肾盂肾炎()
A. 血尿伴疼痛
B. 血尿伴膀胱刺激症状
C. 血尿伴发热
D. 无症状性血尿
E. 血尿伴出血倾向
[填空题]生产性毒物进入人体的途径有三种,即()、皮肤、()。
[填空题]水泥细度检测方法,80um筛析试验称取试样()。
[判断题]等效电源定理中的戴维南定理,是指任何一个线性有源二端网络都可以用一个恒流源IS和电阻RS并联的电路来代替。( )
A.正确
B.错误
[单项选择]You forget () it to me. I haven't forgotten () it to you yesterday.
A. to return; to give
B. returning; giving
C. to return; giving
D. returning; to give
[判断题]在带电作业过程中如设备突然停电,作业人员可转为停电作业。
A.正确
B.错误
[单选题]职业道德修养是一种( )的思想斗争。
A.指令性开展;
B.自觉开展;
C.强制开展;
D.人为开展
[单项选择]
When a rare disease ALD threatened to kill the four-year-old boy Lorenzo, his parents refused to give up hope. Doctors explained that there was no cure for ALD, and that he would probably die within three years. But Lorenzo’s parents set out to prove the doctors wrong.
The parents devoted themselves to keeping their son alive and searching for a cure. But doctors and the families of other ALD patients often refused to take them seriously. They thought the efforts to find a cure were a waste of time, and drug companies weren’t interested in supporting research into such a rare disease.
However, the parents still refused to give up and spent every available hour in medical libraries and talking to anyone who would help. Through trial and error (反复实验), they finally created a cure from ingredients (调料) commonly found in the kitchen. The cure, named" Lorenzo’s Oil", saved the boy’s life. Despite the good results, scientists and doctors
A. was really effective
B. was a success story
C. only worked in theory
D. would save the boy’s life
[单项选择]有关甲亢的病因目前公认的是()。
A. 与心理因素有关
B. 与环境有关
C. 与肌体受伤有关
D. 与自身免疫有关
E. 与社会因素有关
[单选题]室内消火栓系统中配备的(),是以密集射流灭火。
A.泡沫钩枪
B.开花水枪
C.喷雾水枪
D.直流水枪
[单项选择]正常成人白细胞计数中淋巴细胞的百分比是()
A. 1%~5%
B. 3%~8%
C. 10%~20%
D. 20%~40%
E. 50%~70%
[单选题]教育现代化的核心目标是
A.实现人的现代化
B.实现教育观念的现代化
C.实现教育制度的现代化
D.实现教育内容的现代化
[判断题]金属在发生塑性变形之前,一定会先发生弹性变形。
[单选题]在低压用电设备上工作,需高压线路、设备配合停电时,应填用相应的( )。
A.工作票
B.任务单
C.工作记录
D.派工单
[单选题]机动车在超车过程中与对面来车有会车可能时,应( )
A. 加速超过以免碰撞
B. 鸣喇叭示意来车减速
C. 不准超车
[单选题]在带电作业过程中,值班调控人员或运维人员发现相关设备故障,应立即通知()。
A.工作票签发人
B.工作许可人
C.工作监护人
D.工作负责人
[单选题]肝性脑病的诱发因素,下列哪项应除外
A. 外科手术
B. 多次灌肠
C. 上消化道出血
D. 感染
E. 大 量摄入高蛋白饮食
[单项选择]感染病毒的细胞在胞核或胞质内存在可着色的斑块状结构称
A. 包涵体
B. 蚀斑
C. 空斑
D. 极体
E. 异染颗粒
[单选题] DME询问和应答信号的脉冲编码格式是什么?( )
A. 单脉冲
B. 脉冲对
C. 随机
D. 矩形脉冲
[单选题]使用绝缘电阻表测量高压设备绝缘,应由( )进行。
A.一人
B.两人
C.三人
D.四人
[单选题]《煤矿安全规程》第五十六条规定:用垮落法控制顶板,回柱后顶板不垮落、悬顶距离超过作业规程的规定时,必须停止采煤,采取()或其他措施进行处理。
A.增加支护密度
B.人工强制放顶
C.工作面加打木垛
[单选题]按机车的配属关系分为配属机车和( )机车。
A.出租
B.储备
C.非配属
[单项选择]Since the mid-1960s Southeast Asia has faced a potentially wide-ranging security threat. Well before the events of September 11, the region was enduring a slump in exports and a falloff in foreign investment as Western firms headed to China. Even Singapore’s economy, the region’s strongest, probably shrank by 2% in 2001, while Indonesia, the weakest player, is struggling to avert a new foreign debt crisis.
Now the region is being seen overseas as a breeding ground for international terrorists. Foreign businesses have stopped sending execs to the region to explore new opportunities, while companies are beefing up security at their offices and homes. Clearly, the region’s governments need to show the world they can keep the peace. That requires achieving a tricky balancing act: authorities must provide adequate security to foreign firms without being alarmist and scaring them off completely. Also vexing for Southeast Asian governments is how to deal with U.S. offers of military as
A. A.3 ) most probably means ______. harmfulB. noticeableC. decreasingD. benign
[单选题]依据《中国南方电网有限责任公司电力安全工作规程》,在110kV及以上线路上工作使用( )时,可在工作相(极)装设单根个人保安线。
A.个人保安线
B.工作接地线
C.架空地线
[填空题]家庭教育、()、同伴团体、()、大众传播媒介及其他社会文化因素在价值观的形成中扮演了重要的角色。
[判断题]工作票应由工作许可人审核,手工或电子签发后方可执行。
A.正确
B.错误
[判断题]长安通卡:是指由西安市城市一卡通公司发行的车票,可乘坐地铁、公交等。( )
A.正确
B.错误
[简答题]我们党坚持立党为公、执政为民的本质要求是什么?
[单选题]盘饰中的混合面料面粉与蜂蜜的比例一般为( )。
A.5:1
B.10:1
C.15:1
D.20:1
[单选题]父亲:男人
A.老人:小孩
B.母亲:女人
C.黑夜:白天
D.工厂:企业
[填空题]法维莱制动机司机制动阀从BCU(制动控制单元)接收输入信号,然后调整BP( )压力信号,进而控制机车的缓解及制动。
[多选题]能够激发人的工作能力的动力包括(
A.物质动力
B.精神动力
C.信息动力
D.能量动力
E.激励动力
[判断题]辙叉心宽50mm以上处所,两条垂直裂纹相加,长度达60mm及以下时,应及时更换。
A.正确
B.错误
[判断题]14.滚动轴承代号的后段,主要表示结构改变、特殊要求加工等。( )
A.正确
B.错误
[判断题]9号线地下区间线路长度6.32KM
A.正确
B.错误