●在NetWare网络中，客户需要访问某个类型的服务器时，首先要发送一个 (65) 广播报文来寻找服务器。

●The purpose of the requirements definition phase is to produce a clear，complete，consistent，and testable (66) of the technical requirements for the software product．

●Flow control is a function that prevents network congestion by ensuring that (71) do not overwhelm (72) with datA．There are three commonly used methods for handling network congestion ． (73) is used by network devices to temporarily store bursts of excess data in memory until they can be processed． (74) are used by receiving devices to help prevent their buffers from overflowing ． (75) is a flow-control scheme in which the source device requires an acknowledgment from the destination after a certain number of packets have been transmitted．

●用户最关心的存储器的性能主要有 (1) 。关于常用的只读存储器ROM的正确描述是： (2) 只能由生产厂家在生产芯片的过程中写入，用户无法改写。 (3) 允许用户写入一次，以后只能读出，不能改写。 (4) 不仅可以由用户写入，而且允许用紫外线擦除已经写入的内容。 (5) 可以直接用电信号按字节改写。

●某流水线浮点加法器分为5级，若每一级所需要的时间分别是6ns、7ns、8ns、9ns和6ns，则此流水线的最大加速比为 (8) 。若每一级的时间均为7ns，则最大加速比为 (9) 。

●下列叙述中错误的是 (10) 。