题目内容

甲类、乙类和甲乙类放大电路中，__电路导通角最大，_电路效率最高。

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听力原文： What I mainly feel, really, is nervous. You know, like I am being sent back to school or some thing. I am feeling very lacking in confidence, which is of course not the best starting position. After all these years of doing the job, and doing it well, I'm proud to say, and picking it up as I've gone along. It seems embarrassing to be told to go get a piece of paper, to have to have a certificate, especially when you feel you know what you're doing. Yes, of course, I do realize there'll be things on the course I haven't done before. And that concerns me too. Because I don't know how well I'll retain it all, if I'll be able to recall it afterwards. Oh, perhaps it will all be OK in the end. I certainly hope so.
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阅读以下说明，回答问题1～问题5，将解答填入对应的解答栏内。
[说明]
在Linux环境下使用的FTP服务器软件主要有Wu-FTP、NcFTP和ProPTP三种，其中Wu-FTP是目前最流行的一种免费FTP服务器软件，某单位就使用该软件架设了一台FTP服务器，下面是该服务器主要配置文件/etc/ftpaccess的主要内容。
[配置文件/etc/ftpaccess的主要内容]
loginfails 5
class local real*
class remote anonymous guest*
limit remote 200 Any /etc/ftpd/toomany.msg
message/etc/ftpd/welcome.msg login
compress yes local remote
tar yes local remote
private yes
passwd-check rfc822 enforce
log commands real
log transfer anonymous guest inbound outbound
log transfer real inbound
shutdown/etc/ftpd/shut.msg
delete no anonymous.guest
overwrite no anonymous，guest
rename no anonymous
chmod no anonymous，guest
umask no anonymous
upload/home/ftpdno
upload/home/ftpd/bin no
upload/home/ftpd/etc no
upload/home/ftpd/pub yes real 0644 dirs
upload/home/ftpd/incoming yes real guest anonymous 0644 dirs
alias in/incoming
email admin@abc.net.cn
email ferd@sina.com.cn
deny .com.tw /etc/ftpd/deny.msg
文件/etc/ftpaccess中，loginfails5一行的含义是什么？

房屋典权名词解释

生产能力指数法是根据()的投资额和生产能力与()的生产能力估算()的投资额。