【单选题】以下哪个语句是输入语句()。
A.
Scanner scan = new Scanner(System.in);
B.
System.out.println("请输入用户名:");
C.
msg.setUserName(scan.next());
【单选题】语句“ Msg msg=new Msg(); ”创建了一个()。
【单选题】语句中Msg msg=new Msg();,msg为:
【单选题】下面程序下载http://127.0.0.1的字符串: try { WebClient client = new WebClient(); client.Encoding = Encoding.UTF8; client.DownloadStringCompleted += client_DownloadStringCompleted; Uri u...
A.
程序等待服务器响应,然后显示msg.Text = "OK";
B.
程序不等待服务器响应,就显示msg.Text = "OK";
C.
程序有错误,语句 client.DownloadStringCompleted += client_DownloadStringCompleted; 应该为: client.DownloadStringCompleted = client_DownloadStringCompleted;
【单选题】苯急性中毒主要表现为中枢神经系统的麻醉作用,而慢性中毒主要是对____的损害.