热门试题:
[单项选择]在突触传递过程中,促使突触小泡中递质释放到突触间隙中的离子为()
A. Ca2+
B. K+
C. Na+
D. Cl-
E. Mg2+
[单项选择]We are profoundly ignorant about the origins of language and have to content ourselves with more or less plausible speculations. We do not even know for certain when language arose, but it seems likely that it goes back to the earliest history of man, perhaps haft a million years ago. We have no direct evidence, but it seems probable that it took the earliest forms of human cooperation. In the Ice Ages of the Pleistocene(更新世) period, our earliest human ancestors established the Old Stone Age culture; they made stone tools and, later, tools of bone, ivory, and antler; they made fire and cooked their food; they hunted big game, often by methods that called for considerable cooperation and coordination. As their material culture gradually developed, they became artists and drew pebbles as well as wonderful paintings of animals on the walls of caves. It is difficult to believe that the makers of these Paleolithic(旧石器时代的) cultures lacked the power of speech. It is a long step, admittedly, f
A. show man’s multiple use of single words
B. support the fact that naming things is most important
C. indicate how adults teach language to children
D. compare children’s earliest words with those of primitive men
[多选题]双指示剂法测定精制盐水中NaOH和Na2CO3的含量,如滴定时第一滴定终点HCl标准滴定溶液过量。则下列说法正确的有()。
A.NaOH的测定结果是偏高
B.Na2CO3的测定结果是偏低
C.只影响NaOH的测定结果
D.对NaOH和Na2CO3的测定结果无影响
[单选题]在开关电器中,气体吹动电弧的方法为横吹时,气体吹动方向与电弧轴线相()
A. 平行
B. 垂直
C. 倾斜 30°角度
D. 角度
[简答题]球罐充压结束时压力为15MPa(G),温度为30℃,当温度降至10℃时,瓶内压力为多少?
[单项选择]
A Shelter for the Homeless
Last summer I was a volunteer (志愿者) at a shelter for the homeless, a place for homeless people to sleep at night. I wasn’t working that summer and was (21) only two classes in summer school, so I had some (22) time. Three nights a week, I (23) in the kitchen of the shelter along with four other volunteers. We planned and (24) for 45 people hot meals (25) vegetables, chicken, fish and fruit. The homeless people (26) this good food because many of them usually didn’t eat well.
I (27) this volunteer work, making (28) with the four volunteers in the kitchen. One was a very nice elderly housewife, one a movie actor, another a young teacher, and the other a college student, like me.
I talked to a lot of the homeless people at the shelter. Their life stories (29) me with sympathy (同情). Some of them had (30) with alcohol (酒) or drugs while
A. wanted
B. had
C. owned
D. enjoyed
[单项选择]下列描述波长与频率关系的结论,哪个是错误的?()
A. 波长与频率成反比
B. 频率越高,波长越短
C. 频率越低,波长越长
D. 频率越高,纵向分辨率越好
E. 波长与频率成正比
[单项选择]以下表述不正确的是()
A. 称取"0.1g",系指称取重量可为0.06~0.14g
B. 称取"2g",系指称取重量可为1.5~2.5g
C. 称取"2.0g",系指称取重量可为1.95~2.05g
D. 称取"2.00g",系指称取重量为1.995~2.005g
E. 称取"2.00g",系指称取重量为1.996~2.004g
[判断题]使用电瓶泵应急操作回收支脚时,一人操作即可回收。
A.正确
B.错误
[单选题]以下名称是手机中的常用软件,属于系统软件的是()。
A. 手机QQ
B. android
C. Skype
D. 微信
[单项选择]目前流式细胞仪中常用的光源是
A. 钨灯
B. 汞灯
C. 紫外灯
D. 激光
E. 荧光
[单选题](JLY-CB03)设备的( )是指设备在给定时间内,在规定的条件下完成规定功能的能力。
A.可靠性
B.生产性
C.安全性
D.适应性
[单选题]数学发展史上曾经发生过三次危机,触发第三次危机的事件是( )。
A.无理数的发现
B.微积分的创立
C.罗素悖论
D.数学命题的机器证明
[单项选择]The country was an island that enjoyed civilized living for a thousand years or more with little ______ from the outside world.
A. disturbance
B. discrimination
C. irritation
D. irregularity
[单选题]当含有“时分秒”的子钟中“:”闪烁代表( )。
A.子钟正在校时
B.子钟停止走时
C.子钟不校时
D.子钟硬件故障
[单选题]对站间距离不足( )的短小区间,为满足线路大修、清筛、换轨等作业要求,可同时封锁两个车站以及相邻区间正线。
A.5000m
B.3000m
C.2000m
D. 1000m
[单选题] "乘客信息系统车载子系统不包括( )设备。
A.车载台
B.车载AP
C.车载交换机
D.车载播放控制器"
[多选题]3.59. 第59题
分布式电源发电量消纳方式分为(),由用户自行选择。
A.全部上网
B.全部自用
C.自发自用余电上网
D.消纳方式可随意更改
[单项选择]影响大脑发育,引起( )多是由于脂肪摄入不足而引起;肥胖则多由脂肪过量而引起.
A. 营养不良,长发育缓慢,免疫力下降
B. 某些皮肤病(如湿疹)
C. 体重轻,易疲劳,头晕等
D. 消化缓慢,消化不良
[判断题]正常类信贷资产转让业务由信贷资产原审批机构对应的总行专业部门进行审核。
A.正确
B.错误
[单选题]与慢性淋巴细胞性白血病重叠的淋巴瘤是
A.滤泡型淋巴瘤
B.弥漫性小细胞性淋巴瘤
C.弥漫性大细胞性B细胞淋巴瘤
D.Burkitt淋巴瘤
[单选题]双胎妊娠与下述并发症无直接关系的是
A.羊水过多
B.胎盘早剥
C.胎膜早破
D.贫血
E.羊水栓塞
[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》(Q/CSSG 510001-2015)第7.5.8条规定:在邻近可能误登的带电设备构架上,应设置( )标示牌。
A.禁止攀登,高压危险
B.禁止合闸,有人工作
C.止步,高压危险
D.禁止合闸,线路有人工作
[简答题]焊缝探伤报告应详细记录每个焊缝探伤的有关情况,包括探伤条件、仪器设备、测试数据、( )、处理意见等。
[单项选择]特发性血小板减少性紫癜血热妄行证,治宜首选( )
A. 归脾汤
B. 桃红四物汤
C. 茜根散
D. 犀角地黄汤
E. 保元汤
[单选题]药库管理人员对库存药品质量进行检查应
A.每日一次
B.每月一次
C.每季度一次
D.半年一次
E.每年一次
[单项选择]Z型传动的推进装置是垂直悬挂在船尾的,最突出特点是()。
A. 传动效率高
B. 操纵性能好
C. 初投资低
D. 安全可靠
[单选题]激光与生物组织相互作用时的损伤效应以什么为主( )
A.光化学效应
B.电磁效应
C.机械压力效应
D.热效应
E.冲击波效应
[多选题]改善环境包括(____)三个方面。
A.改善工作条件
B.改进办公设备
C.改进工作方法
D.改善人际关系
[单选题]雨雪冰冻灾害救援,人员归队后,应跟进落实( )措施。
A. “三热”保障
B. 健康跟踪
C. 体温检测
D. 视情洗消
[填空题]脚手架搭设完成后应由脚手架监督进行检查合格并挂( )后方可使用。
[填空题]盒子的浮动用()属性,盒子的定位用()属性。
[判断题].交织覆盖单层网BSC设2套。( )
A.正确
B.错误
[多选题]根据铁心结构形式的不同,三相变压器的磁路系统分为(____)。
A.三相组式变压器磁路
B.三相箱式变压器磁路
C.三相心式变压器磁路
D.三相连接组
[判断题]企业网银的对外付款功能支持向跨行个人账户转账。
A.正确
B.错误
[单项选择]男,1个月。咳嗽1天,发热3小时,T39.3℃,就诊过程中突然双眼上翻,肢体强直,持续1分钟。查体:咽红,心肺腹及神经系统无异常,半年前也有相同病史,最可能诊断是:
A. 癫痫
B. 低钙惊厥
C. 中毒性脑病
D. 化脓性脑膜炎
E. 高热惊厥
[单项选择]( )是对机体位置、运动状态的反映。
A. 内受
B. 本受
C. 内脏
D. 外受