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【单选题】
1929年,丹麦的达姆博士研制出一 种饲料,在试验中,他发现食用该饲料的小鸡皮下和肌肉都会出血,问题始终没有解决。10年后,他在农村进行调研,发现当地食用了该饲料的小鸡,没有一只患出血症。他猜想农家小鸡一定是吃了某种能防治出血症的特殊物质。于是,他开展研究,最终发现维生素K可以防治出血症。这一事例告诉我们( )。
A.
科学思维方法都是人们在偶然条件下掌握的
B.
科学思维方法必须遵循形式逻辑要求
C.
科学思维方法可以帮助我们正确地解决问题,更好地改造世界
D.
只有亲自参加实践,才能掌握科学思维方法
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举一反三
【多选题】拆装高压控制盒安全操作注意事项有哪些( )
A.
穿戴好劳动保护用品
B.
切断高低压电源
C.
使用专用绝缘工具
D.
注意防火设备
【简答题】请用下列短语填空: what you said how it happened who drove the car that I fell down on the street that I was knocked down by a car A: What’s wrong with your leg? B: Well,...
【单选题】The author implies
A.
decisions about promotion are partly based on personal feelings.
B.
Western values have completely overwhelmed traditional Japanese attitude.
C.
respect for authority was introduced after World War Ⅱ.
D.
most Japanese workers are members of a single party.
【简答题】How well did the car run?
【单选题】利用【查询实体面积】功能获取的信息是(  )。
A.
表面积
B.
水平投影面积
C.
垂直投影面积
D.
体积
【简答题】A.To make the class more active. B.To leave personal feelings behind. C.To give the wonderful lectures. D.To make friends with students.
【简答题】A: What’s wrong with your leg? B: Well, I hurt my leg last night. A: What happened? B: I’ve forgotten how it happened. I just remember ____________________ ________________. A: Did you see ___________...
【简答题】As the big weekend approaches, my feelings about you and your marriage are personal and it’s more 36 to me that you realize how much I love you and how 37 I am of the amazing woman you have become. My...
【简答题】选择合适的短语或从句补全对话 A. what you said B. how it happened C. who drove the car D. that I fell down on the street E. that I was knocked down by a car -What's wrong with your leg? -Well, I hurt my leg last ni...
【单选题】第47届联合国大会确定每年哪一时间为国际残疾人日 A.12月3日 B.11月3日 C.10月3日 D.12月13日 E.10月10日
A.
A
B.
B
C.
C
D.
D
E.
E
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