| The climate of Earth is changing.
Climatologists are confident that over the past century, the global average
surface temperature has increased by about half a degree Celsius. This warming
is thought to be at least partly the result of human activities, such as the
burning of fossil fuels and the clearing of forests for agriculture. As the
global population grows and national economies expand, the global average
temperature is expected to continue increasing by an additional 1.0~C to 3.5℃by
the year 2100. Climate change is one of the most important environmental issues facing humankind. Understanding the potential impacts of climate change for natural ecosystems is essential if we are going to manage our environment to minimize the negative consequences of climate change and maximize the opportunities that it may offer. Because natural ecosys A. The burning of fuels such as coal or oil. B. The clearing of forests. C. The cultivation of farmland. D. The negative consequences of human activities. [单项选择]华生认为最初的（）是一种对自己身体运动受到限制的天生的反应。
A. 怒 B. 惧 C. 恶 D. 爱 [判断题]为了使发动机有充足的动力性，应做到合理使用、定期检测、强制维护，以保证汽车良好的技术状况。
[单选题]根据《刑法》规定，下列不属于主刑的是( )。
A.拘役 B.死刑 C.管制 D.罚金 [单选题] 在电缆隧道内巡视时,作业人员应携带便携式气体测试仪,通风不良时还应携带( )。 (1.0分)
A. 正压式空气呼吸器 B. 防毒面具 C. 口罩 D. 湿毛巾 [单选题]右心房、右心室、肺循环、左心房血流量增多,而左心室、体循环血流量减少,这是下述哪一种先天性心脏病的血流动力学改变
A.动脉导管未闭 B.室间隔缺损 C.肺动脉狭窄 D.法洛四联症 E.房间隔缺损 [多选题]技师论文的选题就是确定论文的( )。
A.方向 B.要求 C.主旨 D.目标 [多选题] [多选]易燃易爆化学物品出厂时,必须有产品安全说明书。说明书中必须有经法定 检验机构测定的该物品的()。
A.燃点 B.闪点 C.自燃点 D.爆炸极限 E.浓度极限 [多项选择]下列各项中哪些表明上消化道大出血尚未停止（）。
A. 黑粪次数增多 B. 黑粪由糊状变为成形略带黄色 C. 呕吐物由咖啡色转为鲜红 D. 网织红细胞计数持续升高 E. 血尿素氮恢复正常后又升高 [单选题]弹性支柱式推力轴承,当抗重螺丝承重以后,利用弹性油箱向( )变形以及通过压力油传递使各块推力瓦达到受力均匀。
A.永久 B.机械 C.弹性 [判断题]筒形阀板节流阀既可作节流用，也可作为截止阀。
A.正确 B.错误 [判断题]电视塔等特殊高层的内部装修，装饰均应采用A级装修材料。
A.正确 B.错误 我来回答: 提交
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