在编译程序中,语法分析的方法有自底向上分析和自顶向下分析。自底向上分析方法自左向右扫描输入符号串,通过(46)分析其语法是否正确。例如,(47)就是一种自底向上的分析方法,与其他自底向上分析方法不同,它是根据(48)来进行归约的。自顶向下分析方法从文法的开始符号出发,判断其能否(49)出输入符号串。采用自顶向下分析方法时,要求文法不含有(50)。
To accommodate the longest path allowed by 802.3, the slot time has been set to 512 bit times, or(75).
Every host and muter on the Internet has an IP address,which encodes its(69).
When you choose a command name that is followed by "…" on menu, a(72)box appears in which you provide more information.
The Pentium includes hardware for both segmentation and paging. Both mechanisms can be disabled, allowing the user to choose from four distinct views of memory. Now the most frequently used view(such as UNIX System V)is(67).
The typical firewall consists of two packet filters and a(an)(68).
In a computer, which of the following is the longest period?(66).
(73)
(71)
(72)
(70)
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