问题
单项选择题
按照国际惯例，外债偿债率安全线为（）
A.25%
B.20%
C.60%
D.100%
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
按照国际惯例，外债偿债率安全线为（）
A.25%
B.20%
C.60%
D.100%
参考答案：B
| 完形填空。 | ||||
| Computer hackers (黑客) have now got their hands on mobile phones. A phone virus (病毒) can 1 your phone do things you have no control over, computer security (安全) experts 2 . It might 3 the White House or the police, or forward your personal address book to a marketing company. Or it could simply eat into the phone's operating software, turning it 4 and erasing your personal information. Similar viruses have already made mobile phone owners 5 . in Japan and Europe. Ari Hypponen, chief technical officer of a computer security in Finland, said a virus can get your 6 and send them elsewhere. And it can record your 7 . Mobiles are now able to surf the Net, send emails and 8 software, so they are an easy 9 for the same hackers who have sent viruses to computers over the last decade. "It's technically 10 now," said Stephen Trilling, director of research at anti-virus 11 maker Symantec Corp based in the US."If the phone is connected to the 12 , it can be used to transmit threats and 13 targets, just as any computer can." In Japan, if you opened a certain email message 14 your mobile, It would cause the phone to repeatedly 15 the national emergency number. So phone operators had to 16 emergency calls until the bug was 17 . In Europe, mobile's short message service, 18 SMS, has been used to send codes that could damage phones. Mobile users can 19 viruses, of course, by sticking to their traditional phones 20 Web links, some experts said. | ||||
|