{{B}}Spacing in Animals{{/B}} {{I}}Flight Distance{{/I}} Any observant person has noticed that a wild animal will allow a man or other potential enemy to approach only up to a given distance before it flees. "Flight distance" is the terms used for this interspecies spacing. As a general rule, there is a positive relationship between the size of an animal and its flight distance — the larger the animal, the greater the distance it must keep between itself and the enemy. An antelope will flee when the enemy is as much as five hundred yards away. The wall lizard’s flight distance, on the other hand is about six feet. Flight is the basic means of survival for mobile creatures. {{/I}}Critical Distance{{/I}} Critical distance apparently is present A. begin to attack. B. try to hide. C. begin to jump. D. run away. [多选题]下列选项中属于留样的管理规定的内容为()。
A.A.留样容器上应标签 B.B.留样室外环境 C.C.留样保存时间 D.D.留样领用、撤销手续 E.E.有毒样品应实行“五双”制度 [单项选择]180机组穿孔机最大轧制力:()
A. 400吨 B. 350吨 C. 500吨 [单项选择]一般情况下,若磁盘转速提高一倍,则______。
A. 平均寻道时间缩小一半 B. 存取速度也提高一倍 C. 平均寻道时间不会受到影响 D. 存取速度不变 [单项选择]患者男,63岁,有高血压、糖尿病史多年,就诊前5h突发胸痛,持续不缓解。查体:心率110次/min,血压90/60mmHg,双肺弥漫性细小水泡音,心脏听诊区未闻及杂音,双下肢无水肿,心电图表现胸前导联ST段压低0.2mV,伴有对称性T波倒置。如果确诊为非ST段抬高性心肌梗死,最佳的治疗策略为()
A. 双重抗血小板治疗 B. 抗凝治疗 C. 静脉溶栓 D. IABP保护下,尽早行冠状动脉造影及血管重建术 E. 硝酸甘油静脉滴注 [单选题]、公安机关及其人民警察不可以当场收缴罚款的情形是( )。
A.行人李某因红灯过人行道被处罚款20元,李某对罚款没有异议 B.刘某在火车上被处罚款500元。其向指定银行缴纳罚款有困难,提出当场收缴罚款 C.陈某因偷开他人机动车被处500元罚款 D.蒋某在甲市火车站转乘火车时因殴打他人被处500元罚款 [填空题]集装油箱上安装有( ),分别用于观察集装油箱内部油的液位情况。
[多选题]【专业知识】属于流化床炉的特点有:()
A.燃烧效率高 B.传热效果好 C.钢材耗量大 D.燃料适应性广 我来回答: 提交
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