首页
普通专升本
成人高考
学位英语
在线刷题
最近学习
最近学习课程
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
最强大脑 · 3天挑战极限记...
副标题副标题副标题副
您现在位置:
模拟考场
>
湖北成人高考
>
高起点
>
理科数学
>
浏览试题
[单选题]
[单选题] 下列等式中,不成立的是(??)
A
B
C
D
收藏
查看答案
参考答案
试题答案:
A
答案解释:
本题主要考查的知识点为向量的运算
相关题目
下列各式正确的是(??)
从6本不同的文学书和4本不同的科技书中,任意取出3本,则取到3本同类书的概率为 ( )
热门试题
1.
This passage mainly talks about how Americans do business with foreigners.
2.
8.辽代诗人耶律倍的诗歌是
3.
16.与游戏活动相比,幼儿园教学活动更注重目的性和()
4.
线性规划的基本特点是模型的数学表达式是( )
5.
21. No one knows why we sleep, but it’s certain that we need to. People who are prevented from sleeping begin to suffer obvious effect after a few days --- they think less clearly, and they fall asleep during the working hours. Some may have hallucinations (幻觉).There are no rules about sleep. Generally speaking, grown-ups sleep about seven and a half hours each night and probably more than 60 percent get between seven and eight hours. But perhaps eight percent are quite happy with five hours or less, and four percent or so find that they want ten hours or more. If you feel all right, you’re probably getting enough sleep. The important thing is not to worry how much other people get --- their needs may be different. Exercise doesn’t seem to increase the need for sleep, office workers, for example, sleep for about as long as people doing physically active work.Children sleep more than grown-ups --- perhaps fourteen to eighteen hours soon after birth, going down to grown-up levels by early teen-age. Sleep patterns also tend to be different in the elderly, who may sleep less at night than they did when younger. They find sleep getting more broken, and often make it a rule to sleep during the daytime.(10分)21.1 According to the passage, some people are unable to think clearly because ________.(2分)A. they have hallucinationsB. they sleep for too many hoursC. they don’t have enough sleep D. they feel sleepy during the working hours
热门试卷
成人高考专升本《政治》模拟试卷
去做题
已有3411做题
2020年湖北成人高考专升本政治模拟试题三
去做题
已有2205做题
成人高考专升本政治考试模拟试题及答案(1)
去做题
已有1893做题
湖北成考专升本政治真题(2021年)
去做题
已有1331做题
成人高考高起点语文考试高分突破试题及答案四
去做题
已有1190做题