| The predictability of our mortality
rates is something that has long puzzled social scientists. After all, there is
no natural reason why 2,500 people should accidentally shoot them- selves each
year or why 7,000 should drown or 55,000 die in their cars. No one establishes a
quota for each type of death. It just happens that they follow a consistent
pattern year after year. A few years ago a Canadian psychologist named Gerald Wilde became interested in this phenomenon. He noticed that mortality rates for violent and accidental deaths throughout the Western world have remained oddly static throughout the whole of the century, despite all the technological advances and increases in safety standards that have happened in that time. Wilde developed an intriguing theory called “risk homeostasis”. According to this theory, peop A. wearing seat belts does not have any benefits from the statistic point of view B. deaths from wearing seat belts are the same as those from not wearing them C. deaths from other reasons counterbalance the benefits of wearing seat belts D. wearing seat belts does not necessarily reduce deaths from traffic accidents [判断题]接触网基坑爆破一般采用将雷管与主接线串联的方式。
A.正确 B.错误 [单项选择]药典凡例中关于近似溶解度的表示系指溶质1g(ml)在溶剂1 000ml中不能完全溶解
A. 易溶 B. 微溶 C. 几乎不溶或不溶 D. 溶解 E. 略溶 [多选题]下列关于该评分表说法正确的有( )
A.当汇总表得分值不足70分时,评定为不合格 B.当有一分项检查评分表得零分时,评定为不合格 C.当汇总表得分值在80分及以上,判定为优良 D.当汇总表得分值在70分及以上,判定为合格 [判断题]《房屋建筑工程文明施工提升标准》规定,施 工单位应在围墙上安装喷雾降尘装置,在空气 重污染预警启动或易扬尘作业时自动开启。
A.正确 B.错误 [单项选择]影响企业技术创新领域选择的产业因素是（）
A. 竞争对手的态势 B. 外部技术供给 C. 用户的需求 D. 进入壁垒 [单选题] 低压带电工作时,应采取遮蔽( )等防止相间或接地短路的有效措施;若无法采取遮蔽措施时,则将影响作业的有电设备停电。 (1.0分)
A. 导体部分 B. 有电部分 C. 停电部分 D. 金属部分 [简答题]在陈奕迅的《好久不见》MV中，陈奕迅以黑白色调模仿了哪位喜剧大师？
[单项选择]带电阻性负载的单相半波可控整流电路中，α的移向范围是（）而对应的θ的变化范围为（）
A. 0-π，0-π B. 0-π/3，0-π C. 0-π，π-0 D. π/3-0，0-π 我来回答: 提交
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