热门试题:
[单选题] 网络与安防设备配置协议及策略应遵循( )原则。 (1.0分)
A. 最大化
B. 最小化
C. 纵向加密
D. 横向隔离
[判断题]工程简单造价便宜并不是UWB的技术特点。
[多项选择]造血生长因子受体家族包括（）
A. IL-2R、IL-3R
B. IL-4R、IL-5R
C. IL-6R、IL-7R
D. IL-9R
E. IL-1R、M-CSFR
[不定项选择题]共用题干
Narrow Escape
We had left the hut too late that morning. When we stepped outside,the sky beyond the mountains to our east was already livid with colour. It meant the day would be a hot one,and the warmth would loosen rocks that were gripped by ice.
As soon as we stepped out on to the face,it became obvious this was going to be an awkward route. The main problem was talus,the debris that collects on mountainsides. Talus is despised by mountaineers for two reasons. First,because it can easily be pushed off on to you by people climbing above. And second,because it makes every step you take insecure.
For about 30 minutes we moved steadily up the face. The rock was in poor condition, shattered horizontally and mazed with cracks. When I tried to haul myself up on a block of it,it would pull out towards me,like a drawer opening. My hands became progressively wetter and colder. Then came a shout.“Cailloux!Cailloux!”I heard yelled from above,in a female voice. The words echoed down towards us. I looked up to see where they had come from.
There were just two rocks at first,leaping and bounding down the face towards us,once cannoning off each other in mid-air. And then the air above suddenly seemed alive with falling rocks,humming through the air and filling it with noise. Crack,went each one as it leapt off the rock face,then hum-hum-hum as it moved through the air,then crack again. The pause between the cracks lengthened each time,as the rocks gained momentum and jumped further and further. I continued to gaze up at the rocks as they fell and skipped towards me. A boy who had been a few years above me at school had taught me never to look up during a rock fall.“Why?Because a rock in your face is far less pleasant than a rock on your helmet,”he told us.“Face in,always face in.”
I heard Toby,my partner on the mountain that day,shouting at me. I looked across. He was safe beneath an overhanging canopy of rock. I could not understand him. Then I felt a thump,and was tugged backwards and round,as though somebody had clamped a heavy hand on my shoulder and turned me to face them. A rock had hit the lid of my rucksack.
I looked up again. A rock was heading down straight towards me. Instinctively,I leant backwards and arched my back out from the rock to try to protect my chest. What about my fingers,though,I thought:they'll be crushed flat if it hits them,and I'll never get down. Then I heard a crack directly in front of me,and a tug at my trousers,and a yell from Toby. “Are you all right?That went straight through you.”The rock had pitched in front of me, and passed through the hoop of my body,between my legs,missing me but snatching at my clothing as it went.
Toby and I had spent the evening talking through the events of the morning:What if the big final stone hadn't leapt sideways,what if I'd been knocked off,would you have held me, would I have pulled you off?A more experienced mountaineer would probably have thought nothing of it.I knew I would not forget it.
What is sarcastic in the words of the boy in paragraph four?
A.He didn't keep his“face in”.
B.Not every climber wears a helmet.
C.It is very difficult not to look up during a rockfall.
D.Being hit by a rock isn't“pleasant”at all.
[单选题]工作许可手续完成后，工作负责人、专责监护人应向工作班成员交待工作内容、人员分工、带电部位和现场安全措施、进行危险点告知，并履行确认手续，（ ），工作班方可开始工作。
A.所有人员签字后
B.装完工作接地线后
C.所有人员到位后
D.现场准备工作完成后
[判断题]检查减震器螺栓。垂向减震器下部安装螺栓安装牢固，防松线无错位；检查减震器。垂向减震器无损伤、裂纹，无漏油；
A.正确
B.错误
[单项选择]救生艇上所配备的淡水可供满载乘员（）。
A. 1天之用
B. 4天之用
C. 7天之用
[单选题]对因发生地震灾害,可能造成巨大财产损失和严重人员伤亡的风险,可以通过建立巨灾保险制度分散风险。国家发展有财政支持的地震灾害保险事业,()单位和个人参加地震灾害保险。
A.强制
B.帮助
C.鼓励
[单选题]在流行性乙型脑炎的流行环节中,幼猪是
A.传染源
B.中间宿主
C.传染源和扩散宿主
D.储存宿主
E.传染源和储存宿主
[单选题]放掉人体静电积累的最好方法是( )
A. 穿塑料鞋
B. 穿胶鞋
C. 穿布鞋
D. 触摸接地金属
[填空题]为表单添加菜单，除了要在“常规选项”对话框中选择“顶层表单”复选框，还要将表单的 Show Window属性值设为 【15】 ，最后要在 【16】 事件代码中添加调用菜单程序的命令。
[判断题]催化加氢测定不饱和化合物时，溶剂、试剂及容器不能含有硫化物或一氧化碳。（）
A.正确
B.错误
[单项选择]They took ______ measures to prevent poisonous gases from escaping.
A. fruitful
B. beneficial
C. sufficient
D. effective
[判断题]送电工作的组织，由客户组织开展安全交底和安全检查，明确职责，各专业分别落实相关安全措施并向负责人确认设备具备投运条件。
A.正确
B.错误
[多选题]大雪天气应对室外配电装置重点检查( )。
A.接线处落雪有无立即融化
B.结合处落雪有无立即融化
C.传动机构有无冰溜冰冻
D.瓷瓶有无冰溜冰冻。
[单选题]需要越过防护信号机禁止信号时，首列列车限速（ ）km/h。
A.A、20
B.B、25
C.C、30
D.D、35
[单选题]时钟电池钝化是指电池在长期不放电或放电电流较小时,会在电极产生一层致密的钝化膜,电池内阻升高,在放电时输出电压(____)。
A.下降
B. 升高
C. 恒定
D. 为零
[判断题]使用安卓Android操作系统手机上网，在设置里的WLAN中搜索无线信号。
A.正确
B.错误
[单选题]一氧化碳浓度达到( )时能爆炸，有强烈的毒性。
A.13%～75%
B.5%～16%
C.15%～60%
D.13%～95%
[填空题]腌腊制品的关键加工工序是（）和（），它们直接关系着产品特性和品质。
[判断题]排烟路径或排烟口不得危及作战阵地,闲杂人员不得随意穿越或靠近,参战人员可以随意穿越或靠近。
*
A.正确
B.错误
[判断题]道口铺面、护桩、栏杆及栏门由工务部门负责维修；
A.正确
B.错误
[单项选择]使用（）可以测量车辆轮对内侧距离。
A. 轮对内侧距离检查尺
B. 车钩高度检查尺
C. 车轮直径检查尺
D. LLJ-4A型车辆车轮第四种检查器
[单选题]（ ）工作，指电气设备发生故障被迫紧急停止运行，需短时间内恢复的抢修和排除故障的工作。
A.A.事故紧急抢修
B.B.检修
C.C.应急处理
D.D.事故处理
[单选题]在《劳动法》中对劳动者纪律和道德观念方面的素质要求是( )。
A.不违反传统的道德规范
B.要用自我道德意识的来束缚
C.提高自我的法律保护意识
D.遵守劳动纪律和职业道德
[单项选择]主要提供给吸顶灯、吊灯等作配套光源，供家庭、商场等照明用的是（）荧光灯。
A. 直管型
B. 彩色直管型
C. 单端紧凑型节能
D. 环形
[单项选择]国家机关是经济法律关系中最重要的主体。在该类主体中，具有特殊地位、担负组织管理和协调经济职能的是( )。
A. 各级立法机关
B. 各级行政机关
C. 各级人民法院
D. 各级人民检察院
[单项选择]“文化不是先天遗传的本能，而是后天通过学习和模仿获得的知识、经验、技能和习惯等”，这指的是文化的（）
A. 创造性
B. 习得性
C. 共享性
D. 累积性
[单选题]胃壁细胞可分泌的物质有
A.生长抑素
B.胃抑素
C.胃蛋白酶原
D.内因子
[多选题]股金证挂失业务,法人股东应持哪些资料办理( )
A.营业执照
B.单位公函
C.法定代表人及经办人有效身份证件
D.授权委托书
[单项选择]患者男，50岁，缺失，拟行可摘局部义齿修复，做基牙，行支托凹预备。义齿设计应该属于
A. 黏膜支持式
B. 混合支持式
C. 支托支持式
D. 牙支持式
E. 基托支持式
[简答题]用户有哪些情形时，供电企业可不经批准中止供电（事后应报告本单位负责人）？
[简答题]下列关于有限空间特点描述正确的有( )。
[判断题]在Word2007中，插入页眉后，清除“页眉和页脚工具设计”选项卡“选项”组中“奇偶页不同”复选框中的选中标记，即可为奇、偶页设置不同的页眉和页脚信息。
A.正确
B.错误
[判断题]跨步电压的大小与两脚间距离无关。易
A.正确
B.错误
[判断题]开采容易自燃和自燃的煤层时,必须对采空区、突出和冒落孔润等空隙采取措施防止自燃（0.08分）
A.正确
B.错误
[单项选择]下列药物最常应用于治疗冠心病变异型心绞痛发作的是（）
A. α受体阻滞剂
B. β受体阻滞剂
C. 钙通道阻滞剂
D. 硝酸酯类
E. 血管紧张素转换酶抑制剂
[单项选择]黄柏药材在显微镜下观察，应没有（）
A. 鲜黄色的晶鞘纤维
B. 粘液细胞
C. 淀粉粒
D. 导管
