把关系看做二维表,则下列说法中错误的是A.表中允许出现相同的行 B.表中不允许出现相 发布时间:2018-06-01 17:16 │ 来源:www.tikuol.com 题型:单项选择题 问题: 把关系看做二维表,则下列说法中错误的是A.表中允许出现相同的行B.表中不允许出现相同的行C.行的次序可以交换D.列的次序可以交换
题型:单项选择题 有以下程序 #include<stdio.h> #include<string.b> main() {char x[]="STRING"; x[0]=0;x[1]='\0';x[2]='0'; printf("%d%d\n",sizeof(x),strlen(x)); } 程序运行后的输出结果是( )。A.6 1B.7 0C.6 3D.7 1 查看答案
题型:单项选择题 A pregnant client who is diabetic is at risk for having a large-for-gestational-age infant because of which of the following()A. Excess sugar causing reduced placental functioning.B. Insulin acting as a growth hormone on the fetus.C. Maternal dietary intake of high calories.D. Excess insulin reducing placental functioning. 查看答案