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【简答题】
The improbable chain of events that leads Alexander Fleming 1.______ to discover penicillin in 1928 is the stuff which scientific myths 2.______ are made. It was a discovery that would change the course of the history, The active ingredient in that mold, which Fleming named penicillin, turned to be an infection-fighting agent of 3.______ enormous potency. When it was finally recognized as what it was—the efficacious life-saving drug in the world—penicillin 4.______ would alter forever the treatment of bacterial infections. By the middle of the century, Fleming's discovery spawned a huge phar- 5.______ maceutical industry, churning out synthetic penicillin that would conquer some of man-kind's most ancient scourges, including syphilis, gangrene, and tuberculosis. When he died a heart attack in 1955, he was mourned by 6.______ the world and buried as a national hero in the crypt of St. Paul's Cathedral in London. Although Fleming's scientific work in and of itself may not have reached great, his singular contribution 7.______ changed the practice of medicine. He deserves our utmost recog- nition. At the same time, we must bear on mind that the 8.______ 'Fleming Myth', as he called it, embodies the accomplishments of many giants of anti-biotic development. Fleming is but a cho- sen representative for the likes of Florey, Chain, Domagk, and Waksman, many of who remain, sadly, virtual unknowns. 9.______ Their achievements have made the world a better, healthier place. In commemorating Fleming, and we commemorate them 10.______ all. (51)
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【判断题】沥青混合料物复压目的是整平和稳定混合料。( )
A.
正确
B.
错误
【简答题】设函数 在点 处可导,试求下列各极限的值。 (1) (2)
【单选题】audience
A.
n.1.听众;观众 2.接见;拜见
B.
v. 组织
C.
a.1.自动的 2.习惯性的
【单选题】在PowerPoint中,插入菜单中的幻灯片副本命令的功能是()。
A.
将当前幻灯片保存到磁盘上
B.
将当前幻灯片移动到文稿末尾
C.
在当前幻灯片后,插入与当前幻灯片完全相同的一张幻灯片
D.
删除幻灯片
【单选题】要在PowerPoint中插入Excel表,应执行“插入”菜单中的( )命令。
A.
表格
B.
图表
C.
对象
D.
文本框
【单选题】audience
A.
n.听众,观众,读者
B.
n.航空公司;航线
C.
n.飞机
D.
n.机场,航空站
【单选题】Charlie's first film receive wide acknowledge from audience.
A.
Right
B.
Wrong
C.
Not mentioned
【简答题】用G32指下图所示外圆柱螺纹的数控编程,并完成零件的仿真加工(单线三角螺纹),提交所编写的外轮廓和外螺纹加工程序,以及零件仿真加工结果的截图图片(设毛坏尺寸Φ35x80)。
【简答题】如今,人们经常讨论职工下岗的问题,但也常常弄不清“下岗职工”的准确定义。国家统计局(1997) 261号统计报表的填表说明中对“下岗职工”的说明是:下岗职工是指由于企业的生产和经营状况等原因,已经离开本人的生产和工作岗位,并已不在本单位从事其他工作,但仍与用人单位保留劳动关系的人员。 按照以上划分标准,以下哪项所述的人员可以称为下岗职工? A.赵大大原来在汽车制造厂工作,半年前辞去工作,开了一个汽...
【简答题】设函数f(x)在点x 0 处可导,试求下列各极限的值。 (1) ; (2) 。
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