皮皮学，免费搜题
登录
搜题
【简答题】
命题：“若-1＜x＜1，则x 2 ＜1”的逆否命题是 若x≥1或x≤-1，则x 2 ≥1 若x 2 ＜1，则-1＜x＜1 若x 2 ＞1，则x＞1或x＜-1 若x 2 ≥1，则x≥1或x≤-1
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】以下程序执行后的输出结果是( )。 #include int main() { int i=0,a=0; while(i<20) { for(;;) { if((i%10)==0)break; else i--; } i+=11; a+=i; } printf("%d",a); return 0; }
A.
21
B.
32
C.
33
D.
11
【单选题】It was the first time James felt that he had achieved something, which is pretty difficult by_____.
A.
him
B.
his
C.
himself
D.
he
【单选题】While staying in the village, James unselfishly shared whatever he had with the villagers without asking for anything ______ .
A.
in return
B.
in common
C.
in turn
D.
in place
【简答题】以下程序执行后的输出结果是 : static void Main(string[] args) { int[] data={11,13,14,15,16,17,18}; int i=0,k=0; while(i<7 && data[i]%2!=0) { k=k+data[i]; i++; } Console .WriteLine ("{0}",k); Console.ReadLine(); } 结...
相关题目：