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【简答题】
Body and Food Your body, which has close relations with the food you eat, is the most important thing you own, so it needs proper treatment and proper nourishment (营养).The old saying “An apple a day keeps the doctor away ”is not as silly as some people think. The body needs fruit and vegetables because they contain vitamin C. Many people take extra vitamins in pill form, believing that these will make them healthy. But a good diet is made up of nourishing food and this gives all the vitamins you need. The body doesn’t need or use extra vitamins, so why waste money on them? In the modern western world, many people are too busy to bother about eating properly.They throw anything into their stomachs, eating hurriedly and carelessly. The list of illnesses caused or made worse by bad eating habits is frightening.
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【简答题】EDA 的英文全称是( ) 其 中文含义是电子设计自动化。
【简答题】EDA的英文全称是()
【简答题】现代电子设计技术核心是EDA技术,EDA的英文全称是(),中文名称是
【单选题】与合成视紫红质有关是
A.
维生素 K
B.
维生素 B 12
C.
维生素 E
D.
维生素 C
E.
维生素 A
【单选题】在反应2A + B =' 3C' + D中,已知20克A与4克B恰好完全反应,生成6克D,则在此反应中B和C的质量比是
A.
2:1
B.
3:1
C.
1:3
D.
2:9
【简答题】EDA的英文全称是()
【单选题】—— 与视紫红质的合成有关。
A.
尼克酸
B.
维生素 E
C.
维生素 D
D.
维生素 A
【单选题】反应 2A + 2B 9 3C ,对 A 是一级反应,对 B 是二级反应,其反应速率常数 k 的单位为 ( ) 。
A.
s-1
B.
mol·L-1·s-1
C.
L·mol-1·s-1
D.
L2·mol-2·s-1
【单选题】EDA 的英文全称是 ( )
A.
Electronic Design Automation
B.
Application Specific Integrated Circuits
C.
Field Programmable Gate Array
D.
Complex Programmable Logic Device
【单选题】与合成视紫红质有关
A.
VitA
B.
VitD
C.
VitK
D.
VitE
E.
VitC