皮皮学，免费搜题
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搜题
【单选题】
在网络，中断指攻击者破坏网络系统的资源，使之变成无效的或无用的。这是对A.
保密性的攻击
B.
完整性的攻击
C.
可用性的攻击
D.
真实性的攻击
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
【简答题】写出程序运行结果。 #include main() { int i=10,j=0; do { j=j+i; i--;} while (i>2); printf("%d\n",j); }
【简答题】写出程序运行结果。 #include main( ) {int i,j; for (i=1;i<5;i++) for (j=2;j<=i;j++) putchar('#'); }
【单选题】写出程序运行结果 #include int main() { int i=1, n=0; switch(i) { case 1: case 2: n++; break; case 3: n++; } printf("%d", n); return 0; }
A.
0
B.
1
C.
2
D.
3
【单选题】Jack doesn't work ________ Tom. [ ]
A.
as harder as
B.
so hard as
C.
harder like
D.
not as hard as
【简答题】完形填空。 Tom __ 1 __ a very good student, and he __ 2 __ doing homework, because he liked __ 3 __ other things in his free time. Usually he didn’t do __ 4 __ homework, and when he did it, he always made ...
【单选题】In fact Tom _______．
A.
liked glasses
B.
went to the wrong shop
C.
couldn't read at all
D.
knew the man in the shop
【简答题】使用关键字 来定义接口。
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