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问题 单项选择题 B型题

女性，45岁，风湿性心脏病二尖瓣狭窄16年，伴房颤近1年，某日做家务时突发下腹部剧烈绞痛，最可能的诊断是（）

A.主动脉夹层

B.急性心肌梗死

C.肺动脉栓塞

D.心绞痛

E.肠系膜动脉栓塞

答案

参考答案：E

单项选择题

下列程序实现了2个监听器接口：ActionListener和W1ndowListener。import java.awt.*; import java.awt.event.*; public class ex39______ { public static void main(String[] args) { ex39 obj = new ex39(); obj .go(); } public void go() { Frame f = new Frame("ex39"); f.addWindowListener(this); Button b = new Button("Button"); b.addActionListener(this); f.add(b); f.pack(); f.setVisible(true); } public void actionPerformed(ActionEvent e) { System.out.println("Button pressed!"); } public void windowActivated(WindowEvent e){} public void windowDeactivated(WindowEvent e){} public void windowClosed(WindowEvent e) {} public void windowClosing(WindowEvent e){System.exit(1); public void windowIconified(WindowEvent e){} public void windowDeiconified(WindowEvent e) {} public void windowOpened(WindowEvent e){} } 请选择正确的语句填入横线处。

A．extends ActionListener, WindowListener

B．implements ActionListener, WindowListener

C．implements ActionListener; WindowListener

D．extends ActionListener; WindowListener
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单项选择题

（）不属于电热用具。

A、洗衣机

B、电烤箱

C、电饭锅

D、微波炉
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