皮皮学，免费搜题
登录
搜题
【简答题】
解释下面代码段的功能: - (NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath: (NSIndexPath *)indexPath { NSInteger row=indexPath.row; if (row==3) { return nil; } return indexPath; }
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】TCP(Transmission Control Protocol)was specifically designed to provide a reliable end-to-end byte stream over a(n)(70).
A.
IP address
B.
reliable network
C.
socket
D.
unreliable internetwork
【单选题】●TCP(Transmission Control Protocol)was specifically designed to provide a reliable end-to-end byte stream over a(n) (70) ． (70)
A.
IP address
B.
reliable network
C.
socket
D.
unreliable internetwork
【单选题】UDP的全拼为()。
A.
User Datagram Protocol
B.
Transmission Control Protocol
C.
Transport Protocol Data Unit
D.
以上都不是
【单选题】What did Cindy's father do? U1听力练习2.mp3
A.
went sailing
B.
played volleyball
C.
went swimming
【简答题】TCP(Transmission Control Protocol)是
相关题目：