| We sometimes think humans are uniquely
vulnerable to anxiety, but stress seems to affect the immune defenses of lower
animals too. In one experiment, for example, behavioral immunologist (免疫学家) Mark
Laudenslager, at the University of Denver, gave mild electric shocks to 24 rats.
Half the animals could switch off the current by turning a wheel in their
enclosure, while the other half could not. The rats in the two groups were
paired so that each time one rat turned the wheel it protected both itself and
its helpless Partner from the shock. Laudenslager found that the immune response
was depressed below normal in the helpless rats but not in those that could turn
off the electricity. What he has demonstrated, he believes, is that lack of
control over an event, not the experience itself, is what wakens the immune
system. Other res A. the sweetener was poisonous to them B. their immune systems had been altered by the mind C. they had been weakened physically by the saccharin D. they had taken too much sweetener during earlier conditioning [判断题]其余工程投标报价评审应小于等于87分（ ）
A.正确 B.错误 [单选题]唱票是指监护人根据操作票内容（或事故处理过程中确定的操作内容）逐项朗诵操作指令，（）朗声复诵指令并得到监护人认可的过程。
A.值班负责人 B.操作人 C.监护人 D.值班长 E.lue [判断题]1.63.
在电缆线路中有压接式中间接头者，短期短路时允许温度规定为150℃。 A.正确 B.错误 [单项选择]关于放射防护的方法和措施，下列哪一说法是错误的（）
A. 简易的防护措施是进行距离防护 B. 主动防护的目的是尽量减少X线的发射剂量 C. 限制每次检查的照射次数是减少曝射量的重要措施 D. 继发射线能量小，但对人体的危害也小 E. X线在一定的曝射量范围内对人体是安全的 [判断题]段规定多人在线路封锁上道作业时，应在作业负责人确认线路的封锁情况下，由工地防护员执行“手比、眼看、口呼”制度，其余作业人员回呼后，方可上线作业。
A.正确 B.错误 [单项选择]上行感染常见的病原菌是（）
A. 金黄色葡萄球菌 B. 大肠杆菌 C. 链球菌 D. 绿脓杆菌 E. 结核杆菌 [多选题]用紫外灯等简单仪器检测欧元纸币的专业防伪特征主要包括( )。
A.欧元纸张无荧光反应 B.荧光纤维 C.欧盟旗帜和欧洲中央银行行长签名 D.12颗星和背面的地图和桥梁 [单选题]预应力混凝土岔枕，高度为（ ）。
A.220 mm B.230 mm C.240 mm D.250 mm [单项选择]下列条款不属于护士行为规范的是（）
A. 恪尽职守，勤勉高效，严格自律，发挥表率作用 B. 提高综合素质，尊重关心爱护患者，为患者提供专业医学照顾，注重沟通，体现人文关怀 C. 全面履行护理职责，正确执行疾病护理常规和临床护理技术规范，严格落实各项规章制度，为患者提供优质的护理服务 D. 竭诚协助医生诊治，密切观察患者病情。发现患者病情危急，应立即通知医师 E. 严格执行医嘱，发现医嘱违反法律、法规、规章或者诊疗技术规范，应及时与医师沟通 [多项选择]下列各项中，属于建筑物折旧原因的有( )。
A. 城市规划造成建筑物价值损失 B. 意外破坏的损毁 C. 政府政策变化引起的建筑物价值损失 D. 正常使用的磨损 E. 自然磨损 [单项选择]The war was the most peaceful period of my life. The window of my bedroom faced southeast. My mother had curtained it, but that had small effect. I always woke up with the first light and, with all the responsibilities of the previous day melted, felt myself rather like the sun, ready to shine and feel joy. Life never seemed so Simple and clear and full of possibilities as then. I stuck my feet out under the sheets-I called them Mrs. Left and Mrs. Right-and invented dramatic situations for them in which they discussed the problems of the day. At least Mrs. Right did; she easily showed her feelings, but I didn’t have the same control of Mrs. Left, so she mostly contented herself with nodding agreement.
They discussed what mother and I should do during the day, what Santa Claus should give a fellow for Christmas, and what steps should be taken to brighten the home. There was that little matter of the baby, for instance. Mother and I could never agree about that. Ours was the only A. In January. B. In September. C. In December. D. In November. [单选题]在我国高压电网中,( )只用于作线路弱绝缘保护和变电站保护。
A.保护间隙 B.管型避雷器 C.阀型避雷器 D.氧化锌避雷器 [单选题]（ ）模式是装备CTCS-3级列控车载设备的动车组在CTCS-0/1级区段运行时使用的模式。
A.机车信号 B.休眠 C.部分监控 D.隔离 [单选题] 压力表的刻度上红线标准指示的是( )
A.工作压力 B.最高允许工作压力 C.安全阀的整定压力 D.最低工作压力 [判断题]在具有火灾、爆炸危险的场所、车站、OCC、区间、列车车厢内严禁使用可燃燃气,工程作业中必须使用燃气设备时,升级为一级动火范围。( )
A.正确 B.错误 [判断题]不锈钢焊条的电阻大，易过热发红，因此应选用较小的焊接电流。( )
A.正确 B.错误 [判断题]CRH1型动车组主控VCU按照所需的制动力要求和车重对整个制动要求进行计算，然后按照再生制动优先的原则将制动力在再生制动和摩擦制动之间进行分配。在再生制动力不足的情况下，由摩擦制动进行补偿。( )
A.正确 B.错误 [单选题]皮带打滑的根本原因是：（）。
A.带与滚筒之间的摩擦力小于胶带阻力# B.滚筒表面不够光滑# C.皮带上有积水# D.以上都是 我来回答: 提交
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