皮皮学，免费搜题
登录
搜题
【单选题】
下列类比推理命题（其中Q为有理数集，R为实数集，C为复数集）： ①“若a，b∈R，则a﹣b=0 a=b”类比推出“若a，b∈C，则a﹣b=0 a=b”； ②“若a，b，c，d∈R，则复数a+bi=c+di a=c，b=d”类比推出“若a，b，c，d∈Q，则 ”； ③“若a，b∈R，则a﹣b＞0 a＞b”类比推出“若a，b∈C，则a﹣b＞0 a＞b”． 其中类比结论正确的个数是 [ ]A.
0
B.
1
C.
2
D.
3
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】溶液聚合制备腈纶纤维可分为军相聚和和非均相聚合。请分析pH对于两个体系的影响,并给出各自最适宜的pH范围
【单选题】When I was home in Britain on holiday last summer, I spent an evening looking at photos my father had taken when he stayed with us in Beijing in the spring of 1966. Of all these interesting scenes of ...
A.
To make a comparison between the past and the present.
B.
To honor her father.
C.
To criticize the past.
D.
To criticize the present.
【简答题】One summer evening as I was caking dinner, there was a knock at the door. I it and saw a truly bad-looking man. But his voice was as he said, “Good evening. I come to see if you have a for just one ni...
【简答题】阅读理解。 My family lived in Baltimore. One summer evening as I was fixing supper, there was a knock at the door. I opened it to see a truly terrible-looking man.'Why, he's hardly taller than my eight-yea...
【简答题】超高增加费的定额计算规则与清单规则是否相同?
【单选题】On a summer evening I was caught in the crossfire of dueling wood thrushes, each defending his portion of the forest. Their chosen weapons were their voices; melodies were their ammunition. Each sough...
A.
A special gene make certain wood thrushes exceptional.
B.
Lyrical, liquid and loud, his voice has beauty and depth to match nature's.
C.
There is wide variation in the singing ability of wood thrushes.
D.
I was moved, but both wood thrushes stood their ground.
E.
You can go there and hear what Audubon and Thoreau heard, the same song Native Americans heard in the virgin forest.
F.
His singular talent won this common bird the unabashed affection of two of America's foremost naturalists, an artist and a writer. (71)
【简答题】One summer evening, a 10-year-old boy was trying to hit a bottle with a slingshot(弹弓). The bottle was about 7 to 8 meters __ 36 __. The boy tried many times but still couldn’t hit it. His mother just ...
【简答题】窗体中显示的文字的颜色取决于 属性。
相关题目：
参考解析：
知识点：
题目纠错 0
发布
