题目:
一个长方体,长是高的
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答案:
设长方体的高为h,则长为
h,宽为1 3
h,1 4
则
h-1 3
h=2,1 4
h=2,1 12
h=24,
24×
=8(厘米),1 3
24×
=6(厘米),1 4
长方体的体积:
8×6×24,
=48×24,
=1152(立方厘米);
答:这个长方体的体积是1152立方厘米.
一个长方体,长是高的
|
设长方体的高为h,则长为
h,宽为1 3
h,1 4
则
h-1 3
h=2,1 4
h=2,1 12
h=24,
24×
=8(厘米),1 3
24×
=6(厘米),1 4
长方体的体积:
8×6×24,
=48×24,
=1152(立方厘米);
答:这个长方体的体积是1152立方厘米.
在低压带电设备上,辅助安全工具不可作为基本安全用具使用。
如果飞行员严格遵守操作规程,并且飞机在起飞前经过严格的例行技术检验,那么,飞机就不会失事,除非出现例如劫机这样的特殊意外。这架波音747在金沙岛上空失事。 如果上述断定是真的,则以下哪项也一定是真的( )
A.如果失事时无特殊意外发生,则飞行员一定没有严格遵守操作规程,并且飞机在起飞前没有经过严格的例行技术检验
B.如果失事时有特殊意外发生,则飞行员一定严格遵守了操作规程,并且飞机在起飞前也经过了严格的例行技术检验
C.如果飞行员没有严格遵守操作规程,并且飞机起飞前没有经过严格的例行技术检验,则失事时一定没有特殊意外发生
D.如果失事时没有特殊意外发生,则可得出结论:只要飞机失事的原因,不是飞机在起飞前没有经过严格的例行技术检验,那么一定是飞行员没有严格遵守操作规程
第II卷(选择题共35分) 第四部分:写作(共两节,满分35分) 第一节:任务型读写(共10小题;每小题1分,满分10分) 阅读下面短文,根据所读内容在文章后表格中的空格里填入一个最恰当的单词。 注意:表格中的每个空格只填一个单词。请将答案写在答题卡相应题号的横线上。 Some people believe that greed and selfishness has become the basis of modern society, and we should return to the old traditions of family and community then we will have a better life. To what extent do you agree or disagree with the above opinion? In this fast-paced world, many values are undergoing major changes. While people traditionally prioritize caring, sharing and generosity in life and work, modern people seem to be more self-absorbed and self-concerned. Modern people act selfishly to survive the harsh competition of life. They say that it is a jungle out there. To survive, you have to fight with whatever means that come handy. Obviously greedy and selfishness go perfectly well with such ideas. In a company, employees do everything they can to get better pay and higher position, even at the cost of colleagues. We are in any way advocating any selfish conduct. It is just that people are pressured to act in a certain way due to outside influences. In spite of common practice, it is hard to conclude that modern society is built on greed and selfishness, both of which are not newly invented vocabulary. In ancient times people also did greedy and selfish things though such behaviors were more condemned then. But we can not ignore the fact that people in the past lived a relatively more isolated life and faced less pressure compared with their modern counterparts. Are we happier to share with others and be generous to them? There is no fixed answer either. Some people take great pleasure helping and giving to others while others feel happy doing the opposite. But I personally think that people should not be too selfish. Caring for others can actually encourage the development of a mutually beneficial relationship. In conclusion, modern people appear to be more self-centered than those in the past due to strong outside pressure. However, we should encourage people to know the importance of being caring and generous and to build a mutually beneficial relationship with others. Are Modern People Becoming More Selfish?
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渗透性利尿的机制是
A.血浆晶体渗透压升高
B.血浆胶体渗透压升高
C.肾小管液溶质浓度升高
D.肾小管液晶体渗透压降低
E.血浆晶体渗透压降低
对于子载波的理解错误的是()
A.子载波间隔越小,调度经度越高,系统频谱效率越高
B.子载波间隔越大,调度经度越高,系统频谱效率越高
C.子载波间隔越小,调度经度越高,系统频谱效率越低
D.子载波间隔越小,调度经度越低,系统频谱效率越高