皮皮学，免费搜题
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【多选题】
诺贝尔生理学奖是中国医学界迄今为止获得的最高奖项。作为获奖者,中国女医药学家在没有先进实验设备、科研条件艰苦的情况下,经历了190次失败之后终于成功提炼出青蒿素。青蒿素可以有效降低疟疾患者的死亡率,青蒿素问世40多年来,共使超过600万人逃离疟疾魔掌。发明青蒿素的行为说明( )
A.
个人与丰富多彩的世界紧密相连，始终与世界同呼吸、共命运
B.
只有科学家通过自己的发明创造为人类社会的进步作贡献
C.
我们都是世界中的一员，所做的事都可能对世界发展产生影响
D.
我们要通过自身努力，为人类发展和世界进步贡献智慧和力量
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【多选题】生产产品的洁净室的洁净级别的设置主要取决于以下因素:
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生产工序
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【单选题】Calculate the velocity of wastewater flowing through a pipe having a cross sectional area of 2 cm2 and a discharge rate of 8cm3/s.
A.
4 cm/sec
B.
6 cm/sec
C.
8 cm/sec
D.
10 cm/sec
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【单选题】Which of the following might be Fitzgerald's attitude toward new inventions such as telephones and advertising in the novel?
A.
People should make full use of these modern inventions.
B.
They led to a breakdown of human communication.
C.
They showed another triumph of human intelligence.
D.
They facilitated the progress of human communication.
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【单选题】The velocity of blood flow
A.
Is higher in the capillaries than the arterioles
B.
Is higher in the veins than in the venules
C.
Is higher in the veins than the arteries
D.
Falls to zero in the descending aorta during diastole
E.
Is reduced in a constricted area of a blood vessel
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【单选题】Calculate the velocity of wastewater flowing through a pipe having a cross sectional area of 2 cm2 and a discharge rate of 8cm3/s.
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D.
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【简答题】任何颜色都可以用色立体上的色相,____和饱和度这三项来表定,并给一标号。
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【单选题】Which of the following might be Fitzgerald's attitude toward new inventions such as telephones and advertising in the novel?
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查看完整题目与答案
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Is higher in the capillaries than the arterioles
B.
Is higher in the veins than in the venules
C.
Is higher in the veins than the arteries
D.
Falls to zero in the descending aorta during diastole
E.
Is reduced in a constricted area of a blood vessel
查看完整题目与答案
【简答题】电子商务的服务功能有哪些?
查看完整题目与答案