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共找到 469 与S=an 相关的结果，耗时7 ms
冠词“类别”的表示方法a/an/the+单数可数名词 这是可以互换吗?但又有什么差别?例：what"s this in English?----It"s (a) ruler 这句话可以用the+单数可数名词吗?It"s said that (the) umbrella
英语
was invented o
there‘s an rchin,To injure people who are the most帮忙修改下看看,好象哪里有问题的样子有一只刺猬,伤害的总是那些最亲近他的人.
英语
an organization that produced ...please translatean organization that produced the world"s first microwave aircraft landing system and
其他
the first effe
会翻译英语的都来吧、谢谢.Michael Jordan used to be an NBA member in the U. S. A.He is a legend sports man. His great skill is so amazing that peop
其他
e call him a f
初二英语,三道根据句子的含义和所给首字母完成下列单词1.It"s hard s---- when there is no wind.2.My a----- has power to sign my name .3.He an o---- of the governme
英语
t.
求朋友翻译一封英语邮件Am Mr Gary Wilson from Canada .I"m on a work travel to Mexico for the construction of an estate. My son"s birthday is next
英语
wo weeks and i
设an是公差不为零的等差数列Sn为其前n项和满足S=8且a1a2a5成等比数列求an通项公式
数学
已知数列{an}是等差数列,{bn}是等比数列,a1=b1=2,a7-a3=12,b1+b2=a3求数列{an}和{bn}的通项公式.设cn=anbn,求数列{cn}的前n项和S
数学
已知等比数列｜an｜的公比为q>1,且满足a2+a3+a4=28,a3+2是a2,a4的等差中项.求：若bn=anlog(1/2)an,s=b1+b2+…+bn,求使sn+n+2n+1>30成立的n的最小值.
数学
It would cause a certain failure for the company if the deal could be proved to be an illegal tran与“cause a certain failure ”同义的是哪项?A.
英语
e the kiss of
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