嘧啶核苷酸从头合成的特点是A.在5-磷酸核糖上合成嘧啶环 B.FH4提供一碳单位 C 发布时间:2018-06-12 12:09 │ 来源:www.tikuol.com 题型:单项选择题 问题: 嘧啶核苷酸从头合成的特点是A.在5-磷酸核糖上合成嘧啶环B.FH4提供一碳单位C.先合成氨基甲酰磷酸D.需要甘氨酸参与E.谷氨酸提供氮原子
题型:单项选择题 产后出血的定义是()A.胎儿娩出后24小时内 * * 流血量>500mlB.胎儿娩出后24小时内 * * 流血量≥500mlC.胎儿娩出后24小时内 * * 流血量>400mlD.胎儿娩出后12小时内 * * 流血量≥500mlE.胎儿娩出后12小时内 * * 流血量>500ml 查看答案
题型:单项选择题 Originally introduced by Netscape Communications,___(66)___ are a general mechanism which HTTP Server side applications, such as CGI (67) , can use to both store and retrieve information on the HTTP ___(68)___ side of the connection. Basically, Cookies can be used to compensate for the ___(69)___ nature of HTTP. The addition of a simple, persistent, client-side state significantly extends the capabilities of WWW-based ___(70)___ .A.graphics B.processes C.scriptsD.texts 查看答案
题型:单项选择题 有下列程序: #include<stdio.h> #define N 4 void fun(int a[][N],int b[]) int i; for(i=0;i<N;i++)b[i]=a[i][i]; main() int x[][N]=1,2,3),4),5,6,7,8,9,10)),y[N],i; fun(x,y); for(i=0;i<n;i++)printf("%d",y[i]); printf("\n"); 程序的运行结果是( )。A) 1,2,3,4 B) 1,0,7,0, C) 1,4,5,9 D) 3,4,8,10, 查看答案