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In a few decades , artificial intelligence ( AI ) will surpass many of the abilities that we believe make us special . This is a grand challenge for our age and it may require an " irrational " response . One of the most significant pieces of news from the US in early 2017 was the efforts of Google to make autonomous driving a reality . According to a report , Google's self - driving cars clocked 1,023,330 km , and required human intervention 124 times . That is one intervention about every 8,047 km of autonomous driving . But even more impressive is the progress in just a single year : human interventions fell from 0.8 times per thousand miles to 0.2, a 400% improvement . With such progress , Google's cars will easily surpass my own driving ability later this year . Driving once seemed to be a very human skill . But we said that about chess , too . Then a computer beat the human world champion , repeatedly . The board game Go (围棋) took over from chess as a new test for human thinking in 2016, when a computer beat one of the world's leading professional Go players . With computers conquering what used to be deeply human tasks , what will it mean in the future to be human ? I worry about my six - year - old son . What will his place b е in a world where machines beat us in one area after another ? He'll never calculate faster , never drive better , or even fly more safely . Actually , it all comes down to a fairly simple question : What's so special about us ? It can't be skills like arithmetic , which machines already excel in . So far , machines have a pretty hard time emulating creativity , arbitrary enough not to be predicted by a computer , and yet more than simple randomness . Perhaps , if we continue to improve information - processing machines , well soon have helpful rational assistants . So we must aim to complement the rationality of the machine , rather than to compete with it . If I'm right , we should foster a creative spirit because a dose of illogical creativity will complement the rationality of the machine . Unfortunately , however , our education system has not caught up to the approaching reality . Indeed , our schools and universities are structured to mould pupils to be mostly obedient servants of rationality , and to develop outdated skills in interacting with outdated machines . We need to help our children learn how to best work with smart computers to improve human decision - making . But most of all we need to keep the long - term perspective in mind : that even if computers will outsmart us , we can still be the most creative . Because if we aren't , we won't be providing much value in future ecosystems , and that may put in question the foundation for our existence .
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【单选题】邻二氮菲法测试样中微量铁含量时,为什么要找铁标准溶液的吸收曲线呢?下列描述不正确的是
A.
铁溶液的吸收曲线是铁配合物的特征吸收曲线,可定性分析溶液中是否含有铁离子
B.
待测样品的最大吸收波长,在一定的实验条件下,可能有1-5nm的波段,需要通过吸收曲线的扫描确定最大吸收波长
C.
吸收曲线是物质特征光度吸收,可直接从直接从参考书选择最大吸收波长理论值,不用测定吸收曲线
D.
吸收曲线是待测样品进行定性定量分析的前提
【单选题】家用缝纫机踏板采用的是( )。
A.
双曲柄机构
B.
曲柄摇杆机构
C.
双摇杆机构
【简答题】空间坐标变换中的正交变换矩阵的 9 个元素中只有 ()个独立元素。
【多选题】关于光度分析中的标准曲线和标准曲线法,下列说法正确的是( )
A.
标准曲线是A对C作图的直线
B.
标准曲线法是仪器分析中常用的定量方法
C.
用标准曲线法进行定量分析时,要配制标准系列溶液
D.
用标准曲线法进行定量分析时,未知样品和标准样品的测量条件必须相同。
E.
当浓度太高时,标准曲线会偏离线性。
F.
测量标准系列溶液的吸光度前,要先通过吸光曲线找到合适的测量波长。
【单选题】弥散性血管内凝血期的主要表现是
A.
毛细血管前阻力增加和毛细血管后阻力增加
B.
微动脉、微静脉和毛细血管前括约肌收缩,血液主要通过直捷通路或动静脉短路回流
C.
微血管扩张,微动静脉间分支开放导致毛细血管扩张,血液淤滞,血流速度缓慢
D.
血流缓慢及促凝因素导致血管内凝血,进一步加重组织缺血、缺氧
E.
微静脉和毛细血管通透性增高,使血浆大分子或红细胞渗出
【简答题】休克时微循环代偿期(缺血期)的主要表现是A.毛细血管前阻力增加和毛细血管后阻力增加 B.微动静脉和毛细血管前括约肌收缩,血液通过直捷通路或动静脉短路回流 C.微血管扩张,微动静脉间分支开放,毛细血管扩张,血流淤滞,流速缓慢 D.血流缓慢及促凝因素导致血管内凝血,加重组织缺血、缺氧 E.微静脉和毛细血管通透性增高,使血浆大分子或红细胞渗出 休克时微循环失代偿期(淤滞期)的主要表现是A.毛细血管前阻力...
【单选题】家用缝纫机采用的是( )机构。
A.
双曲柄
B.
双摇杆
C.
曲柄摇杆
【单选题】家用缝纫机踏板采用的是( )。
A.
A.双曲柄机构
B.
曲柄摇杆机构
C.
双摇杆机构
【单选题】家用缝纫机采用的带传动是()传动。
A.
平带
B.
三角带
C.
圆带
D.
同步带
【单选题】家用缝纫机采用的是________机构。
A.
双曲柄
B.
双摇杆
C.
曲柄摇杆
D.
曲柄滑块
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