The agonist PET ligand [11C]AF150(S) was rapidly taken up in the brain and showed an apparent specific M1ACh-R-related signal in brain areas that are rich in M1ACh-R. Moreover, binding of the agonist PET ligand [11C]AF150(S) appears to be sensitive to changes in extracellular ACh ...
∵数列{an}中2an+1-2an=1,∴数列{an}是公差为 1 2的等差数列,∴a101=a1+100d=a1+50.故答案为:a1+50. 利用等差数列的通项公式求解. 本题考点:数列递推式. 考点点评:本题考查数列的等101项的求法,是基础题,解题时要注意等差数列的性质的合理运用. 解析看不懂?免费查看同类题视频解析查看解答 ...
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缩写词:在缩写词前使用“a”还是“an”,需视首字母发音而定。例如: F是辅音字母,但其发音以/e/开头(元音音素),故应说:an FM radio。 U是元音字母,但其发音以/j/音开头(辅音音素),故应说:a UN declaration。 总的来说,“a”用于辅音音素开头的单词前,而“an”则用于元音音素开头的单词前。需要注意的...
统一社会信用代码:- 经营者: 陈永福 关联企业 2 资金数额:- 成立日期: 2011-06-02 电话: 13307566515 邮箱: - 官网: - 地址: 流动经营 琼AAN715是⼀家成⽴于2011年06月02日的个体工商户,属于以从事交通运输、仓储和邮政业为主的企业。位于海口市,经营者为陈永福,目前处于吊销,未注销状态。 企业...
如图,CA⊥AB,垂足为点A,AB=8,AC=4,射线BM⊥AB,垂足为点B,一动点E从A点出发以2/秒的速度沿射线AN运动,点D为射线BM上一动点,随着E点运动而运动,且始终保持ED=CB,当点E运动___秒时,△DEB与△BCA全等. 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 ①当E在线段AB上,AC=BE...
C. an; An; an D. a; The; / 试题答案 在线课程 4. D考查冠词。第一个banana是名词,以辅音音素开头,其前用a表泛指;第二个banana是特指前面提到的那一个,故用the; yellow是形容词,意为"黄色的", 其前不加冠词。 题目来源:同步导学案课时练七年级英语上册人教版>阶段检测卷(Starer Unit 1~3) ...
A young father was visiting an old neighbor. They were standing in the old man’s garden, and talking about children. The young man said,“How strict should parents be with their children?” The old man pointed to(指着)a string (细绳) between a big strong tree and a thin young one....
Recent works have introduced perimeter feedback-control strategies for a homogenous urban region and multiple urban regions with the help of the macroscopic fundamental diagram (MFD) representation, that relates average flow and density (or accumulation) across the network. The perimeter controller is ...
意大利数学家列昂纳多•斐波那契是第一个研究了印度和阿拉伯数学理论的欧洲人,斐波那契数列被誉为是最美的数列,斐波那契数列{an}满足:a1=1,a2=1,an=an-1+an-2(n≥3,n∈N*).若